Mining for Non Miners 2

8/9/2019 Mining for Non Miners 2

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Course on

MINING FOR NON-MINERS

Jeffrey MulyonoArya Citra Mineconsult

Bekerjasama dengan:

DR. Ir. Rudianto Ekawan - ITB

Disampaikan paa kursus

!Auit "omersial an #ukum $isnis %ertam&an'an i Inonesia(

)* Januari +,,


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STUDI KELAYAKAN

PERTAMBANGAN

PART II


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Feasibility Study

A feasibility study is an engineering studybased on test

work and engineering analysis, which presents enough

information to determine whether or not the roje!t should

be ad"an!edto the final engineering and construction stage.

This is a #go$no-go%decision point thereby implying that

sometimes the answer is &'.


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(. ) !on!etual study *a s!oing study+ The preliminary evaluation of a project & based on assumptions and factors.

The accuracy is +/ !" to #$ percent.

There should be a sufficient level of drilling and sampling to define a

resource, simple flow sheet, and mining method. %roduction schedules, and

cost estimates are based on limited data and test work and as a result relymore on eperience and industry standards.

,. ) reliminary easibility *reeasibility+ The intermediate step in the project evaluation.

The accuracy is +/ '" percent range. The need further research during the feasibility stage should be identified.

These include geotechnical studies, waste dumps, and tailings facilities

design, metallurgical testing, and waste characteri(ation studies

The goal is to determine the mining and milling etraction methods and

rates, the product recoveries, environmental and permitting issues, andpreliminary capital and operating cost estimates.

Stages o Feasibility Study


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./ A Feasi&ility Stuy The refinement of the prefeasibility study

The accuracy is +/ )" percent.

*ey components are mine design, production schedule, a detailed process flow

sheet, a detailed plant design, consideration of the environmental issues,

detailed capital and operating costs estimates, and an economic model

The final study provides the basis for the decision on whether further study is

reuired or whether the project is worth pursuing or whether to advance the

project to design and construction. At this point there should be sufficient

information to declare reserves, provided the project has positive economics.

Rate o su!!ess o the Study ew projects survive even the conceptual study.

%refeasibility studies only produce positive results in half of the cases.

At the feasibility level, roughly '$- will fail, and of these most fail as a result of

either overly optimistic assumptions or skipped steps.

Stages o Feasibility Study


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%rinciples of ine conomics0

Economic

decisionsin

mine

planning


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1eotechnical, 2ydrological

& 2ydrogeological

Assessment

3oal 4eneficiationarketing 5tudy

3oal Transportation5tudy

%ort acility 5tudy

%roduction 6evels

ine ngineering

uipment, Ancillary

acilities & an %ower

3apital & 7perating

3ost Assessment

FE)SIBI/IT0 ST1D0

Process of a Feasibility StudyProcess of a Feasibility Study


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)!!ura!y Ranges o "arious Study


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plorationining, arketing &

8nfrastructure 5tudy

nvironmental 8mpact

5tudy

conomic Analysis

B)&2)B/E FE)SIBI/IT0 ST1D0

Framework Process of a Bankable FeasibilityFramework Process of a Bankable Feasibility

StudyStudy


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O012INE A FEASI$2I13 S10D3

4source 5 Inepenent Minin' Consultant6

(. 3eology and Resour!e 4al!ulations.This section primarily identifies the amount of geological reserves and demonstrates the

scientific and technical credibility of the predictions. 8t includes the following9

:i; the basic geology of the site and the area. 'erating 4osts.

This section estimates the operating costs and identifies the procedures used to estimate

operating costs.

((. Finan!ial.

This section analy(es the basic project economics and this assumes a commodity price and likely

contains various =et %resent >alue calculations and ?iscounted 3ash low @eturn 7n 8nvestment

:?3@78; and 8nternal @ate of @eturn analyses.

(,. Summary and Re!ommendations.

This section provides the basic recommendations as to the %roject.


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E2S/'IT)SI D)& R'D12SI

B)B I : E&D)@1/1)&

). 6atar 4elakang

'. aksud dan Tujuan

!. @uang 6ingkup dan etode 5tudi

#. %elaksana 5tudi

". adwal Baktu 5tudi

B)B II : 2E)D))& 1515

). 6okasi dan 6uas Bilayah *%, **, %*%'4

ksploitasi yang dimohon.

'. *esampaian ?aerah dan 5arana %erhubungan5etempat

!. *eadaan 6ingkungan ?aerah, %enduduk, ata

%encaharian %enduduk, *eadaan lora,

auna, 8klim, 5osial konomi dan lainlain

#. Topografi dan orfologi

B)B III : 3E'/'3I D)& 2E)D))& E&D))&

(. 3eologi

a. 6itologi

b. 5truktur

c. 1eoteknik

,. 2eadaan Endaan

a. 4entuk dan %enyebaran ndapan

b. 5ifat dan *ualitas ndapan

c. 3adangan

i. 3ara %erhitungan 3adangan

ii. *lasifikasi dan umlah 3adangan :insitu,

miniable, marketable, dilengkapi denganperhitungan stripping ratio dan cut off grade;


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ED'5)& E&01S1&)& /)'R)& ST1DI 2E/)0)2)&?


B)B IA : RE&4)&) E&)5B)&3)&

). 5istem/etode dan Tata 3ara %enambangan

:dilengkapi bagan alir;

'. Tahapan kegiatan %enambangan :termasuk

penanganan tanah penutup;

!. @encana %roduksi :kuantitas, kualitas, cut off

grade, stripping ratio;

#. %eralatan :jenis, jumlah dan kapasitas;

". adwal @encana %roduksi dan Cmur Tambang

0. @encana %enanganan/%erlakuan 4ahan 1alian

yang 4elum Terpasarkan :kualitas rendah, belum

ekonomis masa sekarang;D. @encana %emanfaatan 4ahan 1alian dan

ineral 8kutan

E. @encana %enanganan/%erlakuan 5isa

3adangan pada %asca Tambang.

B)B A : RE&4)&) E&3'/)@)& D)&

E51R&I)& )T)1 E&414I)&

).5tudi/%ercobaan %engolahan/%emurnian

'.Tatacara %engolahan dan %emurnian

a.Tahapan %engolahan

b.4agan Alir

c.@ecovery %engolahan

!.%eralatan %engolahan :jenis, jumlah & kapasitas;

#.2asil %engolahan dan @encana %emanfaatan

ineral 8kutan

".enis, umlah, *ualitas 2asil %engolahan dan

Tailing

B)B AI : E&3)&321T)& D)& E&I5B1&)&

). Tata 3ara

'. %eralatan :jenis, jumlah, kapasitas;


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ED'5)& E&01S1&)& /)'R)& ST1DI 2E/)0)2)&?


B)B AII : /I&321&3)&? 2ESE@)T)& D)&

2ESE/)5)T)& 2ER)

(. /ingkungan *menga!u keada dokumen

)mdal atau 12/ dan 1/+

a. ?ampak kegiatan :tambang, pengolahan dan

sarana penunjang;.

b. %engelolaan lingkungan

i. %engelolaan limbah :tambang, pengolahan dan

sarana penunjang;.

ii. @encana @eklamasi dan %emanfaatan 6ahan

%asca Tambang.

iii. %enanganan Air Asam Tambang

c. %emantauan 6ingkungan,. 2eselamatan dan 2esehatan 2erja

a. 7rganisasi

b. %eralatan

c. 6angkahlangkah pelaksanaan *!

%ertambangan

d. @encana %enggunaan dan %engamanan 4ahan

%eledak dan 4ahan 4erbahaya lainnya.

B)B AIII : /I&321&3)&? 2ESE@)T)& D)&

2ESE/)5)T)& 2ER)

).4agan 7rganisasi

'.umlah dan kriteria Tenaga *erja

!.Tetap dan Tidak Tetap dalam 4entuk Tabel

#.Tingkat 1aji dan Cpah

".5istem *erja :kontrak, borongan dan lainlain;.

B)B IC : E5)S)R)&

(.Bagan 'rganisasi

,.rosekemasaran

a.?alam =egeri

b.6uar =egeri


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ED'5)& E&01S1&)& /)'R)& ST1DI 2E/)0)2)&?


B)B C : I&AEST)SI D)& )&)/ISIS 2E/)0)2)&

(. In"estasi

a. odal Tetap

i. %engurusan peri(inan dan eksplorasi

ii. %embebasan 6ahan

iii. *onstruksi atau @ekayasa

iv. %eralatan :penambangan, pengolahan,

pengangkutan dan lainlain;.

b. odal *erja

c. 5umber ?ana

,. )nalisis 2elayakan

a. 4iaya %roduksi :termasuk biaya pengelolaan dan

pemantauan lingkungan *!;b. %endapatan %enjualan

c. F3ash lowG :aliran uang tunai;

d. %erhitungan F?iscounted 3ash low @ate of

@eturnG/G 8nternal @ate of @eturnG ?3@7@;.

e. %erhitungan F4reak ven %ointG :4%;

f. Baktu %engembalian odal

g. Analisa *epekaan dan @esiko

B)B CI : 2ESI51/)&

5emuat se!ara ringkas hal-hal sbb :

6uas wilayah yang dimohon/ditingkatkan ke

tahap ksploitasi3adangan :Fin situG, miniableG, FmarketabelG;@encana %enambangan :tata cara dan sistem;

@encana %engolahan dan pemurnian ataupencucian :kalau ada;.@encana %roduksi pertahun dan umur tambang.@encana pemasaran dan harga jual.8nvestasi yang diperlukan termasuk modal kerja

dan sumber dana.2asil analisis kelayakanumlah tenaga kerja :tetap dan harian atau

buruh;%emantauan dan %engelolaan 6ingkungan%otensi dan rencana perlakuan bahan galian

yang belum dapat dipasarkan dan mineral ikutan

serta bahan galian lain.


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ED'5)& E&01S1&)& /)'R)& ST1DI 2E/)0)2)&?


/)5IR)&

). %eta situasi wilayah yang akan ditingkatkan ke

tahap ksploitasi dan sekitarnya, skala ) 9

)$.$$$

'. %eta topografi detail daerah tambang dan

sekitarnya, skala minimum ) 9 '.$$$!. %eta penyebaran cadangan dan kualitas,

skala minimum ) 9 '.$$$

#. %eta situasi tambang :ining 6ay 7ut; skala )9

)$.$$$, yang memuat 9

". *ontur topografi

a. %enyebaran bahan galian

b. 4angunanbangunan pentingc. 4atas wilayah eksploitasi

d. alan, %erkampungan. Fstock pileG, lokasi

pencucian dan pengolahan.

e. 6okasi timbunan waste, tailing dan bahan

galian yang belum dapat dipasarkan.

f. 8ndeks peta rencana pertambangan

g. ?an sebagainya

". %eta rencana penambangan dan reklamasi,

inimal skala ) 9 '.$$$$, menggambarkan 9

a. Tahapan dan blokblok yang akan ditambang

b. Tahapan dan blok wilayah yang akan

direklamasi per tahun

c. alan tambang

d. 6okasi timbunan waste, tailing dan mineral

ikutan serta bahan galian yang belum dapat

dipasarkan

0. ?esain tambang dan pengolahan :dalam

bentuk peta, penampang, gambar ! dimensi,

sketsa, bagan alir dan sebagainya.


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Due Diligen!e

A appropriate level of study by knowledgeable professionals to

identify and assess significant factors affecting the future

operation of the subject of mining property

Areas of the study 9

Technical :mining and marketing;, 6egal, Accounting :financial;

%urposeTo provide reasonable assurance of the basis of investment

related to 9 %urchase or sale, inancing, 8nternal Assesment


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Due Diligen!e

5cope of due diligence study, content, etc

5ee paper attached 9 F?ue ?iligence for ineral %roperty

AcuisitionG, ohn T 4oyd 3onsultant


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Mining for Non Miners 2

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