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CERTIFIED PERSON STUDY GUIDE SHAFT AND SLOPE

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Technical Guidance 580-2200-011 Sinking of Shafts

and Slopes for Underground Mines

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Effective Date: October 1, 2005

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Request in writing

• 30 CFR Part 77 Subpart T (Underground Coal Mines-Health and Safety Standards-Slope and Shaft Sinking).

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Shaft and Slope Construction Supervisor

• 21 years of age• 2 years practical experience sinking of slopes and

shafts• 1 year practical experience sinking of slopes and

shafts – Bachelor of Science Degree in mining engineering– Coal mine foreman or Assistant mine foreman certificate– Industrial mineral underground mine foreman certificate– An acceptable certificate of qualification issued by

another state– Trained in the detection of oxygen and explosive gases /

mechanics of all gas detection devices– Passed a written test with a score of 80 %

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Blaster

• Possess a license issued pursuant to Chapter 210

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Pennsylvania code

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Chapter 210

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Chapter 210.11

• 210.11 Definitions– Blaster– Blaster Learner– Blaster License– Demolition Blasting– Person

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210.13 General

• 210.13 (a) A person may not detonate explosives or supervise blasting activities unless the person has obtained a blaster's license

• 210.13(c) Upon request, a blaster shall exhibit a blasters license – Authorized Department Representative– Blaster's employer– Police Officer

• 210.13(d) Blaster's license is not transferable

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210.14 Eligibility requirements

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BLASTERS LICENSE

• 21 YRS OLD• blaster learner

– 1YRS PRACTICAL BLASTER EXPERIENCE SHAFT AND SLOPE

• AND TAKEN DEP CLASS ON EXPLOSIVES

• AND PASSED DEP EXAMINATION FOR BLASTERS 80 PERCENT SCORE

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210.15 License Application

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Department forms

• $50 check payable to the Commonwealth of Pennsylvania– Submitted 2 week prior to test

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Notarized statement

• Experience as blaster leaner• Competence

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210.17 Issuance and renewal of licenses

• Blasters license will be issued for 3 years• Within the 3 year period have had 8

Hours CEU in Department approved Blasting and Safety courses– Submit a copy of the 8 hr CEU Certificate– Submit a $30 check payable to the

Commonwealth– Renewed within 1 year of its expiration date

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210.18 Out of State Blaster License

• Another States licensing program provides training on the storage, handling and use of explosives

• Examination that is equivalent to Chapter 210

• Copies of the other state's explosives training and exam materials

• Subtopic• Proof of License

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210.19 Suspension, Modification and Revocation• The Department may suspend,

modify or revoke a blaster's license for violations of Chapter 210 / Chapter 211

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ATF Background Check Sec. 555.33

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Safe Explosives Act

• Effective date November 25, 2002• Prohibited Persons Categories;

– Aliens– Persons who have dishonorably discharged from the

military– Citizens of the US who have renounced their citizenship– Felons– Fugitives– Users of, and persons addicted to, controlled substances– Persons who have been adjudicated metal defectives or

committed to mental institutions

• All prohibited persons are permitted to apply to the BATF for relief from Federal explosives disabilities

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Samples

• When requested by ATF, manufacturers and importers of explosives must submit samples, as well as information on their chemical composition

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Intrastate Permit

• limited permit – farmers or construction companies that

acquire and use explosives infrequently and within their State of residence

– will allow the purchaser to receive explosive materials from an in-State explosives licensee or permittee on no more than six (6) occasions during the period of the permit

– Will be valid for one year

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Required Industry Information

• Responsible persons are required to submit to ATF identifying information, fingerprints, and photographs

• Employee of licensees and permittees who will be possessing explosive materials must submit identifying information

• ATF must issue letters of clearance for those responsible persons and possessor employees who are not prohibited from possessing explosives

• Responsible person or employee subject o an explosives prohibition, ATF must provide information on the appeal process

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Inspections

• ATF will have to physically inspect all ATF licensees and permittees at least once every three calendar years

• User permits and licenses, ATF must verify by visual inspection that new applicants and renewal applicants have places of storage for explosive materials

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chapter 211

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211.101 Definitions

• access point• air blast• blast site• blast area• barricade• misfire• blaster• magazine• inner perimeter security• outer perimeter security

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211.101 Definitions (2)

• scaled distance• scaled table of distance• required distance for seismograph

readings

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211.112 Magazine license and fees

• 211.112(a) Shall store explosives in a magazine licensed by the Department– A person may not construct, install or modify a

magazine

• 211.112(b) magazine license specifications – types of explosives– quantities of explosives– conditions to comply with other standards

• 211.112(c) license expires DEC 31 each year

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211.113 Application Content

• Applicant's name, address and telephone number• Contact person• Types and quantities of explosives• Map, plan or sketch of the site location showing

– nearest buildings– nearest railways– nearest highways – existing barricades– proposed barricades

• Plan showing the design and specifications of the magazine

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211.113 Application Content (2)

• Plan showing the design and specifications, dimensions and locations of all security measures

• The latitude and longitude of outdoor magazines– except Type 3

• The latitude and longitude of indoor magazines containing high explosives

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211.114 Displaying the license

• Magazine license or legible copy shall be conspicuously displayed– Shall be displayed inside the magazine

or adjacent to the magazine

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211.115 Explosive storage

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27 CFR Part 555 Subpart K (relating to storage), are incorporated herein by

reference.

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211.115(a1) Classify explosives

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211.115(a2)Determine which class of explosive may be stored in each

type of magazine

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211.115(a3)Determine quantity of explosive

stored

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211.115(a-4) Determine construction standards

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211.115(a5) Site the magazine

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211.115(a6) Specify maintenance and

housekeeping

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211.115(a7) Grant variances

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Security measures (211.115.d)

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211.115(d1) Each magazine site shall be

inspected at least daily at approximately 24-hour

intervals

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Equipped with electronic intrusion detection devices

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Inspected daily (24 hour intervals)

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magazines containing no explosive are not required

to be inspected• Must reflect date last explosives

were removed

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Each inspection

• Include the magazine• Access points and perimeter security

– Inspection can be in person or electronically by remote cameras

• Record of Inspection– Maintained 3 years– Name of person – Date and time inspection began /ended– Remarks– Action taken on problems– Dates no inspection / no explosives

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Magazine and outer perimeter gates at the site

are equipped with electronic intrusion detection devices

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Outer perimeter

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Obstructs, wheeled vehicles

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surround the entire magazine site

• 25 feet away from the exterior of any magazine

• 25 feet away from the inner perimeter security measures

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Subsection (g)

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Sufficient number of personnel assigned to physically insect each

magazine once every hour• All persons with communications

capable of providing direct verbal communications with Police Dept. or another person capable of contacting Police

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Closed Circuit Television (CCTV)

• Continuously monitoring the entire outer perimeter

• Any portion of the outer perimeter that is not protected by another measure

• Images shall be recorded and maintained at least until magazine integrity is confirmed

• Latest output images of all CCTV cameras shall be viewed at least once every hour by a person having direct verbal communications

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Electronic intrusion detection devices

• Microwave sensors• Seismic detectors• Vehicle detectors• Alarms or infrared motion detectors• Zone of detection shall encompass entire outer

perimeter• All systems shall provide initial notification of an

alert within 15 minutes of an event and onsite presence in response to an alert within 1 hour

• All systems shall have backup power and provide an alert

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Earthen Barrier

• 7 feet in height• Constructed to obstruct access, to

the greatest extent possible, by wheeled vehicles

• Made of loose soils the earthen barrier shall be compacted

• Vegetated

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Boulder Barrier

• Boulders shall be of a size and weight to deter, to the greatest extent possible, defeat of the barrier by wheeled vehicles

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Highwall Barrier

• minimum of 7 feet in height– Face or slopes are sufficient to obstruct,

to the greatest extent possible, unauthorized access by wheeled vehicles

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Natural Barrier

• Composed of natural terrain features which are impassable, to the greatest extent possible, to wheeled vehicles

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Fencing Systems

• Constructed of members that of sufficient size, strength and anchorage – To deter, to the greatest extent

possible, the fencing system from being bent over, broken through or uprooted by a wheeled vehicle

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Inner Barrier 211.115

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6 feet away from exterior of magazine (211.115-4 )

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25 feet inside and away from the outer perimeter

security (211.115-4)

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Inner perimeter security can be met by measures

approved by the Department as provided in

subsection (g)

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Personal assigned to physically inspect each

magazine• Once every hour• Equipped with communications

device capable of providing direct verbal communications– Police Department– Another person with the ability to

contact the Police Department

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CCTV

• Images shall be recorded and maintained at least until magazine integrity is confirmed during the next required site inspection

• The latest images of all CCTV cameras shall be viewed once every hour by persons having direct verbal communication with the Police Department

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Electronic intrusion devices

• Shall be installed on each magazine containing high explosives or detonators

• Installed on all magazine doors• Infrared motion detectors and other

similar devices shall be installed on the interior of each magazine

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Microwave sensors, seismic sensors

• Zone of detection shall encompass the inner perimeter, or any portion of the inner perimeter that is not protected by another measure

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All systems

• Shall have the capability of providing initial notification of an alert within 15 minutes of an event

• An on site presence in response to an alert with 1 hour

• Backup power supply– Shall provide and alert in the event of

power loss or a compromise of the system integrity

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Highwall

• minimum of 20 feet in height• face or slopes are sufficient to

obstruct, to the greatest extent possible, access by unauthorized persons.

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Fence construction• minimum of 9 gauge chain link fencing

– maximum 2-inch mesh that is kept in a condition which maintains its original functionality.

• Buried at least 1 foot at the base– Or equipped with a minimum 1.66 inch outside diameter

bottom rail• Minimum height of 8 feet above the ground• Top rail with a minimum 1.66 inch outside diameter• Firmly anchored posts 10 feet or less on center

– End, corner and pull posts shall have a minimum outside diameter of 2.875 inches if round or 2.5-inch square

– Intermediate posts shall have a minimum outside diameter of 2.375 inches if round or 2.25-inche C-Section.

– Posts shall be set in concrete at a minimum depth of 33 inches.– Post holes shall be a minimum of 12 inches in diameter and

completely filled with concrete

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Fence construction (2)

• Outriggers at the top– concertina razor wire attached

• Concertina razor wire attached on the inside at the bottom

• Gates– as many gates as necessary to provide for the

safe exit in event of an emergency

• Vegetation– Trimmed or suppressed to a distance of 6 feet

from each side of the fence

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Inner perimeter security gates

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Constructed at all access points

• firmly anchored posts• good condition• Padlocked whenever the site is

unoccupied

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Gates shall be constructed of a minimum of 9 gauge chain link fencing with a maximum 2-inch mesh

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Gate frame members minimum outside

diameter of 1.9 inches if round or 2.0-inch if square

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Gate Posts with a minimum 6.625-inch

outside diameter

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Posts set in concrete at a minimum depth of 42

inches

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Postholes shall be a minimum of 16 inches in diameter and filled with

concrete

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Outriggers at the top with concertina razor wire

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Two Locks

• Separate hasps and staples• Hood of at least 1/4-inch thick steel

– must prevent sawing or lever-cutting on the locks, hasps, and staples

• Each lock shall have at least five tumblers – case-hardened shackle of at least 3/8 inches in

diameter

• Lock and chain used to secure gate– minimum specification of the chain shall be 3/8

inch Grade 70, Transport

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Outer perimeter security gates

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Constructed at all access points

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Deter to the greatest extent possible, defeat of

the gate by wheeled vehicles

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firmly anchored posts

• Guideposts shall be a minimum 6.625-inch outside diameter

• Posts set in concrete at a minimum depth of 42 inches

• Postholes shall be a minimum of 16 inches in diameter – filled with concrete

• Department may approve, in writing, least equivalent security

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good condition

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Padlocked whenever the site is unoccupied

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Two Locks

• Separate hasps and staples• Hood of at least 1/4-inch thick steel

– must prevent sawing or lever-cutting on the locks, hasps, and staples

• Each lock shall have at least five tumblers – case-hardened shackle of at least 3/8 inches in

diameter

• Lock and chain used to secure gate– minimum specification of the chain shall be 3/8

inch Grade 70, Transport

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"No Trespassing" signs

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Placed around outer perimeter of site

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Shall be spaced so that, except for corners,

adjacent signs are visible

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Warning signs shall be placed at all access points

• Shall provide notice of private property

• No trespassing • Providing a notice substantially

conforming to the following: "Danger, never fight explosives fires, explosives are stored on this site"– to warn first responders and public– Shall provide an emergency contact

phone number

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Signs shall be well maintained

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Signs shall be placed so that a bullet passing

directly through the sign will not impact a magazine

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Signs may not be obscured by vegetation or

other obstructions

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Constructed of a durable, weather-resistant material

• Letters and numbers shall be a minimum height of 2 inches

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In addition to outer perimeter security

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All portable magazines being used as stationary

magazines • Having an a volume of less than 3

cubic yards – shall be immobilized by fastening the

magazine securely to the earth or terrain

– sufficient to prevent displacement of the magazine by wheeled vehicle

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Requirements may be satisfied by any single layer

of perimeter security measures that obstructs

• unauthorized access to the magazine wheeled vehicles

• Access by unauthorized persons• 25 feet away from the exterior of any

magazine• 6 feet from any magazine

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Magazines shall be constructed according to

the construction standards found in 27 CFR Part555,

Subpart K (relating to storage) with the following

additions

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Mobile type 5 magazines being used as stationary magazines for more than 1 year must be located

within the outer perimeter security

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Immobilized in accordance with 27 CFR 555.211

(relating to construction of type 5 magazines

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Fastened securely to earth or terrain feature to

prevent movement of the magazine by a motor

vehicle

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Motor vehicles used to transport bulk blasting

agents that are left unattended at a magazine

site

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Must have two department approved methods of

disabling the vehicles to render tem effectively

immobilized

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Vehicles must be kept within the outer perimeter

security

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Disabling methods may include

• Steering locking device• Pedal locking device• Fuel or electrical system disablers• Other equivalent disabling measures

approved by the Department• Systems of pumps or tanks, or both, used

to store, mix or dispense bulk blasting agents at magazine site– Shall be equipped with locks – Shall be constructed to prevent the

unauthorized removal of blasting agent from the system

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Person who stores explosive materials

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Shall notify both the local police having jurisdiction

and the Pennsylvania State Police

• Notification made in the manner of and in addition to the notification requirements in 27 CFR 555.201 (f) (relating to general)

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Shall immediately notify the Department, Pennsylvania

State Police, and local Police• Evidence is discovered of Break-in or theft at the magazine• an attempted theft or break-in has occurred• Security measures required by this section have been

breached or disabled or disabled or partially breached or disabled

• Short-term partial breaches of security of less than 48-hour duration need not be reported under this subsection if all the following apply:– Partial breach was due to equipment failure or accidental or

natural causes– An account of the partial breach was recorded under

paragraph 1– Immediate measures are being taken to repair or replace the

partial breach

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Notification to State and Local police are in addition

to any notification by agencies of the United

States• Immediately upon June 18, 2005, the

inspection and notification requirements shall be implemented

• Within 180 days of approval of the plan outer or inner perimeter security measure requirements shall be implemented

• Within 360 days of approval of the required plan the remaining perimeter security measures required

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Unauthorized persons exhibiting suspicious

behavior are observed in the vicinity of the

magazine

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Inventory records indicate that explosive material is missing and unaccounted

for

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Permissible explosives / Shot -firing units 77.1909

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Evacuate personal from shaft prior to firing shot

• ALL PLANS SUBMITTED TO MSHA WILL BE SUBMITTED TO THE STATE

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Chapter 211 Incorporates Sub Part k

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211.122 Permit to sell explosives

• Identify the applicant's name, address, telephone number and type of business

• Identify a contact person• Specify type of explosives to be sold• Specify the type of explosives to be sold• State whether the applicant will purchase or

manufacture the explosives to be sold• Permits to sell explosives are not

transferable• Permits to sell explosives expire on April 30

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211.123 Permits to purchase explosives

• Identify the applicant's name, address, telephone number and type of business

• Identify a contact person, including name, address, telephone number and type of business

• Identify the location and license number of the magazine to be used for storing the explosives

• Specify the type of explosives that will be purchased

• Specify whether the explosives are being purchased for sale or use by the permittee

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211.123 Permits to purchase explosives (2)

• Permits to purchase explosives are not transferable

• Permits to purchase explosives expire on April 30 of each year

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211.124 Blasting Activity Permit

• Blast-in-charge– Supervise the blasting activity– Two people present to fire blast– Blaster-In-Charge and up to Six Assistants

• Operating Equipment– Within 50 feet 211.154

• Blaster shall prepare application for blasting activity report– Applicant's name, address, telephone number, type business– Contact person / name, title, telephone number– Identity of subcontractor who will perform the blasting activity– Type of explosive used– Maximum amount of explosives that will be detonated per delay interval of less than 8

milliseconds– Maximum amount of explosives that will be detonated in any one blast– Map indicating the location where the explosives will be used– Purpose for which the explosives will be used– Location and license number of magazine that will be used to store the explosives– Description of how the monitoring requlirements will be satisfied– 3rd part general liability insurance in the amount of $300,000 or greater per occurrence.– anticipated duration of blasting activity – Anticipated days of the week and times when blasting may occur– Distance and direction to the closest building– Printed name, signature and license number of blaster– Proof of notification of blast to resident's within 200 feet– Blast activity permits are not transferable

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211.125 Blasting permit-by- rule

• Blasts are designed and performed for a scaled distance of 90 or greater

• No more than 15 pound of explosives are detonated per delay interval of less than 8 milliseconds

• Total charge weight per blast does not exceed 150 pounds

• Person notifies the Department – verbally– in writing

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211.131 Sales Record

• Shall keep accurate record of every sale of explosives for 3 years– Shall identify the purchaser's name and

address– Department purchase permit number – Date of the sale– Amount and types of explosives

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211.132 Purchase records

• Shall keep a record of all purchases of explosives for 3 years– Records shall identify the date– types and amounts of explosives

purchased– name and address of the seller

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211.133 Blast reports 211.133

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Blaster-In-Charge

• Shall prepare a report for each blast– Sufficient information to reconstruct the

conditions and events surrounding a blast

– Maintained 3 years

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Location of blast and monitor readings

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Name of blasting activity permittee

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Blasting activity permit / mining permit number

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Date and time of blast

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Printed name , signature and license number Blaster-In-Charge

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Type of material blasted

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Sketch showing

• number of holes• burden• pattern dimensions• point of initiation

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Diameter / Depth of blast holes

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Height / length of stemming

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Types of explosives used

• Arrangement in blast holes

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Total weight in pounds of explosives and primer

cartridge

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The maximum weight in pounds of explosives detonated per delay period of less than 8

milliseconds

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Type of circuit, if electric was used

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Direction / Distance in feet from blast site to nearest

building

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A description of the nearest building not

owned based on local landmarks

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Scaled Distance

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Weather Conditions

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Direction from which the wind was coming

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Measures taken to control flyrock (whether or not

mats were used)

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Total quantity and type of detonators and delays

used

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Number of individuals on blast crew

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Monitoring records shall be made part of blast report within 7 days

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Misfire

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211.141 Transportation of Explosives

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Fueling

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Repairs

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Fire Extinguishers

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No Smoking

• 100 feet

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Loading / Unloading

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IME #22 Separation

• Non sparking tools• Wooden bed on vehicle • Separated from tools

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State Inspected Vehicles

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Vehicle Exhaust

• avoid hot gases and sparks• in tack

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Fire Extinguisher

• 10 BC or more– Readily Accessible

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Engine Off / Tires Chocked

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No Smoking within 100 ft

• NO SMOKING signs posted while parked

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DOT Placards

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Immediately

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Less than 2000 pounds of explosives

• Open Body– Sides and ends high enough– fire resistant tarpaulin– magazine attached to vehicle

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More than 2000 pounds of explosives

• Closed Body

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No firearms, combustible materials

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Damaged or Deteriorated explosives

• Manufactures Recommendations

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211.151 Prevention of Damage

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flyrock or damage to real property

• Blaster-in-charge– report to Department within 4 hours

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Air Blast

• 133 dbl peak

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Scaled Distance

• 90

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Peak Particle Velocity

• 2 inches per second

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211.152 Control of Noxious Gases

• Health and Safety of individuals– Evacuate people– interrupt path of gas flow– Vent gases to atmosphere

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211.153 Handling Explosives

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Nonferrous, non sparking tools

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No Smoking

• within 100 ft of where explosives are used or stored

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Damaged or Deteriorated Explosives

• destroy as per Manufacturer recommendations

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Cast Boosters

• detonators shall not be forced into cartridges of explosives or cast boosters

• detonators shall be completely inserted into the cartridge of explosive

• detonators shall be completely inserted into detonator well of a cast booster

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licensed magazine

• Stored– Explosives may not be left unattended– Kept under control and supervision of

Permittee

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Loaded Blast

• loaded blast shall always be under the continuous observation of the blaster-in-charge or a designee

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Blast Site

• No shooting or carrying of ammunition or firearms

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Electric Lines

• test shall be made for stray electrical current

• electric blasting caps may not be used in excess of 50 milliamperes

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Packages of Explosives

• shall not be thrown or slid along floor, over other packages, and handled roughly

• Non-sparking tools

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Electrical Storms

• Area clear of all people• Guards posted to all approaches to

prevent trespass

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Explosives

• damaged and deteriorated shall not be used

• May not be abandoned

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211.154 Preparing the Blast

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211.154(a) Blaster-in-charge

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211.154(a) Must be designated by Blasting

Activity Permittee

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211.154 (a)Shall control and supervise the blasting

activities

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211.154 (a) Responsible for all effects of the blast

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211.154(c) May not prepare or detonate a blast unless another

person is present, ready to render assistant in the event of an accident or

injury

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211.154(d) Shall make every effort to determine

the condition of the material to be blasted

from the individual who drilled the blast holes or

from the drill log.

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211.154(e) Only blaster in charge, other blasters, and up to six assistants per blaster may be at a

blast site once loading of blast holes begins

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211.154(f) While loading a blast hole the following shall

be followed:• 211.154(f-1) Ferrous material may not be

used– This includes the use of steel casings, ferrous

tools and retrieving equipment

• 211.154(f-2) Nonsparking tamping sticks• 211.154(f-3) Pneumatic loading device,

every precaution shall be taken to prevent an static electricity– Loading operation shall be stopped immediately

if static electricity or stray electric currents are detected

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211.154(f) While loading a blast hole the following shall

be followed: (2)• 211.154(f-4) Blast holes shall be carefully

checked for obstructions– Explosives may not be forced past and

obstruction in blast hole

• 211.154(f-5) Each blast hole shall be logged and recorded on the blast report

• 211.154(f-6) Blast hole containing loose dynamite shall be stemmed (not tamped)

• 211.154(f-7) The Department may specify the type and amount of stemming

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211.154(g) Before connecting blast holes, all

activity within the blast area shall cease

• All nonessential persons shall retreat to a safe place

• The blaster-in-charge shall determine the blast area

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211.154(h) Primers shall be prepared only at the hole to

be loaded• Primers shall be prepared only at the

hole to be loaded,immediately prior to loading

• Components of the primer are to be kept separated at the collar of the blast hole

• The primer may not be slit, dropped, deformed or carelessly handled and tamped or forced into blast hole

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211.154(I) Upon completing the loading of a blast hole

• Wood, paper or other materials used to pack explosives shall be inspected for explosives and removed to and isolated area

• materials may be burned after the blast has been fired

• Persons may not be within 100 feet of burning materials

197

211.154(j) Measures shall be taken to reduce the

chance of flyrock• Use of blasting mats or other

protective devices• Blasting to an open, vertical face,

checking the face for loose, hanging material or faults prior to loading the blast holes

198

211.154(k) Only enough explosives for the blast may be brought to the blast site

• Surplus explosives may not be stored in the blast site

199

211.154(l) Blast holes shall be checked to ensure that it is cool and does not contain any hot material or smoldering material

from drilling hole

200

211.154(m) Abrasive or sharp stemming shall be

avoided

201

211.154(n) Blasting activities may not be

conducted within 800 feet of a public roadway

• Precautionary measures including stopping or slowing of traffic and posting signs

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211.154(b) Equipment

• Only equipment necessary loading Blast holes shall operate within 50 ft of the blast site

203

211.155 Preblast measures

204

Prior to detonating a blast, the blaster-in-charge shall:

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211.155(1) Ensure that all excess explosives have been removed from the

blast area

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211.155(2) Inspect the blast site to ensure that connections are proper

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211.155 (3) Ensure that the blast area is cleared

an safeguarded

208

211.155(4) In addition to warning signal, notify all

persons

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211.155(5) Ensure that precautions are in place to protect the pubic on public

roads

210

211.155(6) At least 1 minute but no more than 2 minutes prior to detonation

• Sound a warning signal of three blasts– each lasting 5 seconds

• Warning signal shall be of sufficient power to heard 1,000 feet from the blast site

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211.156 Detonating the Blast

• 211.156(a) Blast may be detonated only between sunrise and sunset– Unless the Department authorizes

• 211.156(b) Only the blaster-in-charge may detonate a blast

212

211.157 Postblast measures

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211.157(a) After a blast has been detonated, no one may return to the

blast area until all smoke and fumes have dissipated

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211.157(b) Blaster-in-charge shall return to and inspect the blast site to

ensure it is safe

215

211.157(c) the blaster-in-charge shall sound an all-

clear signal• One long blast lasting 10 seconds

– All-clear signal shall be heard 1,000 feet from the blast site

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211.157(d) Blaster-in-charge shall determine if a

misfire has occurred• Shall take actions necessary to

render the blast site safe• The blast site shall be made safe

before drilling or muck removal begins

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211.157(e) Blaster-in-charge suspects that

undetonated ammonium nitrate/fuel mixture remains• The muck pile shall be wetted down

with water before any digging • Special attention shall be given to

primers, other explosives or detonators are present in the muck pile

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211.157(f) Blaster-in-charge shall immediately complete the blast report

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211.157(g) Blaster-in-charge shall notify the

Department within 24 hours of a misfire

• A copy of the blast report shall be forwarded to the Department

220

211.158 Mudcapping

• 211.158(a) Mudcapping is allowed only when the blaster-in-charge determines that drilling would not be safe– No more than 10 pounds of explosives

shall be used for a blast

221

211.159 Electric detonation

222

211.159(a) Electric blasting caps shall be tested for

continuity with a blaster's galvanometer or Blaster's

Multimeter • 211.159(a-1) Before the primers are

made up• 211.159(a-2)After the blast hole has

been loaded but prior to stemming• 211.159(a-3) As the final connecting

of the circuit progresses

223

211.159(b) When shunt is removed from electric

blasting cap leg wires, the exposed wires shall be

reshunted

224

211.159(c) Electric blasting caps may not be employed near overhead

electric lines

225

211.159(d) Blasting caps may not be reused if the

leg wires are broken

226

211.159(e) Leg wires shall extend above the top of the

blast hole• Wire connections and splices are not

allowed in the blast hole

227

211.159(f) Only solid wire shall be used in a blasting

circuit• Stranded wire is prohibited

228

211.159(g) Electric detonation near public

roads • Signs shall be erected at least 500

feet from the blast area– Reading "Blast area -shut off all two -

way radios"

229

211.159(h) Permissible blasting machines shall be used to detonate the blast

230

211.159(i) Blasting circuit shall remain shunted until

the time for detonation• Unless the circuit is being tested• connections are being made

231

211.159(j) All blasting machines shall be

calibrated every 30 days by procedures

recommended by the manufacturer or supplier

232

211.159(k) Blaster-in-charge shall determine that there is adequate

current to properly energize the detonators

233

211.160 Nonelectric detonation

• Nonelectric initiation systems shall be checked and tested in accordance with manufacturer recommendations

234

211.160 Detonating cords

235

211.161(a) Shall be cut from the supply roll immediately after

placement in the blast hole

236

A sufficient length of downlines shall be left at the top of the blast ole for connections to trunk lines

• The supply roll shall be immediately removed from the site– Scrap pieces of detonating cord shall be

destroyed after connections are made

237

211.161(b) Trunk line shall be covered with at least

12 inches of earth or sand

238

211.161(c) Detonating cord may not be spliced if the splice will fall within a

blast hole

239

211.162 Safety Fuse

• 211.162(a) Shall be long enough to provide a burn time of 120 seconds or longer

• 211.162(b) Blaster-in-charge shall conduct a test burn– Test burn will utilize at least a 12 inch section of

fuse

• 211.162(c) A proper crimping tool shall be used to crimp a blasting cap to a safety fuse– A blasting cap may not be attached to a safety

fuse in or within 10 feet of a magazine

240

211.171General provisions for monitoring

• 211.171(a) Scaled Distance of a blast is 90 or numerically less at the closest building not owned or leased

• 211.171(b) Blasting without monitoring • 211.171(c) A ground vibration and airblast

record of each blast shall be made part of the blast report

• 211.171(d) The trigger for ground vibration shall be set at a particle velocity of no more than .25 inches per second

241

211.171General provisions for monitoring (2)

• 211.171(e) A printout from the instrument shall be attached to the blast report– the printout shall provide date and time

when instrument was turned on and off, set trigger levels

242

211.172 Monitoring instruments

243

211.172 Monitoring instrument shall provide a permanent record of each

blast• 211.172(1) A monitoring instrument for recording

ground vibration shall have– Frequency range of 2 Hz to 100 Hz– Particle velocity range of 0.2 to4.0 inches per second or

greater– An internal dynamic calibration system

• 211.172(2) A monitoring instrument used to record airblast shall have– A lower frequency limit of 0.1 ,2.0 or 6.0 HZ– An upper end flat-frequency response of at least 200 Hz– A dynamic range that, at a minimum, extends from 106

to 142 dbl

244

211.172 Monitoring instrument shall provide a permanent record of each

blast (2)• 211.172(3) Shall be calibrated

annually– Also when repairs are made– Calibration procedures and

documentation of calibration shall be made available for review by the Department

• 211.172(4) Nonalterable calibration sticker affixed to the instrument

245

211.173 Monitoring records

246

211.173(a) Everyone using the monitoring instrument

shall be trained• A record of the training is to be

maintained and available for review by the Department

247

211.173(b) Monitoring records at a minimum shall

contain• 211.173(b-1)Calibration pulse on each of the

mutually-perpendicular ground vibration traces

• 211.173(b-2) The time history of particle velocities of three mutually perpendicular round vibration traces and one air-overpressure trace, including time base, amplitude scales and peak values for all traces

• 211.173(b-3) The results of a field calibration test for each channel

248

211.173(b) Monitoring records at a minimum shall

contain (2)• 211.173(b-4) The frequency content of all vibration signals using either single degree of freedom (SDF) response spectrum or half-cycle zero-crossing analysis method

• 211.173(b-5) Frequency versus particle velocity plots

• 211.173(b-6) The name and signature of the individual taking the recording

• 211.173(b-7) The location of the monitoring instrument, date and time of the recording

249

211.173(b) Monitoring records at a minimum shall

contain (3)• 211.173(b-8) The last calibration

date of the monitoring instrument

250

211.173(c) If the Department questions the

validity of a ground vibration or airblast record or the interpretation of the

record, the Department may require

• Ground vibration or airblast recording to be analyzed or certified by an independent, qualified consultant– It shall be performed and included with

the blast report within 30 days

251

Title 25 Chapter 87

252

Public highways and entrances to the operation

• Barricade / Guard– If highway is within 1,000 feet of blast to

be shot

253

30 CFR PART 77 SUBPART T

254

Top man on Duty

255

check in and out system

256

Examinations 77.1901

• Pre shift - 90 minutes prior to start of shift– Certified Person

• On shift while men are at work – Certified Person

• Before and after Blasting– Certified Person

257

all exams must include 77.1901

258

259

Continuous Monitoring of Atmosphere

260

Check Coping

261

• Air Reading at Fan– Magnahelic Reading

262

• Check Service Lines

263

check water ring gas test

264

examine ribs below concrete

265

make gas test around ribs

266

make gas tests at bottom

• methane• oxygen• carbon monoxide

267

Correct all hazards found on pre shift / on shift exam

268

Record keeping

• air reading (CFM)(Location)• gas readings

– CH4 and O2 deficiency CO approved devices 77.1901-1

• violations or hazards observed• miss fires• corrective actions taken• date / time • signature

269

surface area exam 77.1901

• tripping and stumbling obstacles• general housekeeping• illumination• walk through compressor house

– note temperature– airline leaks – unusual smells– oil spillage– Subtopic

• record examination

270

Excessive gas encountered 77.1901

• 1.0 % Methane– Make changes or adjustment to ventilation– Do not start any equipment– De-energize power– Re-examine area

• 50 PPM Carbon Monoxide– Make changes or adjustment to ventilation– Re-examine area

• 19.5% Oxygen

271

Excessive gas encountered 77.1901 (2)

• 1.5% Methane– Remove all personal– De-energize equipment– Ventilate– Re-examine area

272

Diesel 77.1902 - 1

• Permissible Part 36

273

Hoists 77.1903

274

Communications 77.1904

• Two independent means of signaling– one audible – signal codes posted– communications tested daily

275

Hoist Construction 77.1907

• Hooks shall be self-closing

276

Daily Inspections 77. 1906

• Insure daily inspections are completed and signed

• Records to be maintained for 1Year

277

Hoist Installation 77.1908

278

Hoist rope suspended from substantial housing

279

Shaft guide and guide attachments installed

77.1908-c

280

emergency escape 77.1908-f

• hoist• Ladder

281

embark / disembark landing over shaft

77.1908-e

282

Hoist bucket

• Shall not ride rim or loaded bucket 77.1908-g

• Mantrip number of people77.1908-h– Speed 500 fpm / 200fpm within100 ft of

stop– speed posted for hoistman– hoist stopped within 15 ft. of landing – all bucket shall be trimmed

283

Wire Ropes 77.1430

284

visual examination 77.1433

• every 14 calendar days• broken wires, stress points,

distortions

285

End attachment retermination 77.1437

286

Drum End Attachment 77.1436

• attached securely to drum• minimum of three full turns of wire

rope on drum

287

Load end attachments 77.1435

288

Retirement criteria 77.1434

• 6% wear• Broken wires• Subtopic

289

Minimum rope strength 77.1431

290

Initial measurement 77.1432

• After initial stretch - before wear is shown

• Baseline measurement – three measurements

• Records shall be retained with cable

291

Hoistman Qualification

292

Ventilation 77.1911

293

Mechanical ventilation

294

Installation• On Surface• Fireproof• Design to permit air reversal• Equipped with automatic signal device• Offset 15 feet• duct work grounded to prevent electrical • Duct work extended as close a possible to

ventilate properly• qualified person designated by the operator to

maintain ventilation system• Fans shall operated continuously while men are

underground– Accidental stoppage

295

examined before each shift

• Quantity of air • Measured by Certified Person• Recorded

296

Electrical equipment 77.1914

• Permissible• Flame resistant• Approved by Bureau of Mines

297

Combustible Materials 77.1915

• Compressed and liquefied gas, oil gasoline and other – Not stored within 100 feet of shaft or

slope

• Other combustible materials and supplies– Not stored with 25 feet of shaft or slope

• Oily rags,waste, waste paper shall be stored in metal containers

298

Welding, cutting; Fire Protection 77.1916

• One portable fire extinguisher • Welding, cutting in the vicinity of any

shaft or slope• Exams for Methane

– 1,0% Methane

• Noncombustible barriers shall be used