MAINTENANCE OFMAINTENANCE OF

TECHNOLOGICALTECHNOLOGICAL

NOISE CONTROLSNOISE CONTROLS

TECHNOLOGICAL NOISE TECHNOLOGICAL NOISE CONTROLS:CONTROLS:

ARE DESIGNED AND INSTALLED TO ARE DESIGNED AND INSTALLED TO PROTECT YOUR HEARINGPROTECT YOUR HEARING

MUST BE PROPERLY SELECTED FOR MUST BE PROPERLY SELECTED FOR INTENDED USEINTENDED USE

ARE NECESSARY ON MOST PIECES OF ARE NECESSARY ON MOST PIECES OF MINING EQUIPMENTMINING EQUIPMENT

ARE INEFFECTIVE IF ALL OR PORTION HAVE ARE INEFFECTIVE IF ALL OR PORTION HAVE BEEN REMOVED BEEN REMOVED

ARE SUBJECT TO WEAR AND TEAR AND MAY ARE SUBJECT TO WEAR AND TEAR AND MAY REQUIRE REPLACEMENTREQUIRE REPLACEMENT

THE FOLLOWING THE FOLLOWING ILLUSTRATE ILLUSTRATE MISAPPLIED,MISAPPLIED,BROKEN, OR BROKEN, OR

MISSINGMISSINGNOISE CONTROLSNOISE CONTROLS

EXCELLENT MUFFLER,BUTEXCELLENT MUFFLER,BUT

IT DISCHARGES AT EAR LEVELIT DISCHARGES AT EAR LEVEL

GOOD INTENTIONSGOOD INTENTIONSPOOR APPLICATIONPOOR APPLICATION

EXHAUST SYSTEM LEAKEXHAUST SYSTEM LEAK

HEAT DESTROYED SOUND HEAT DESTROYED SOUND ABSORPTION MATERIALABSORPTION MATERIAL

POORLY SEALED CURTAINPOORLY SEALED CURTAIN

BARRIER CURTAIN

1/3 OF MATERIAL MISSING1/3 OF MATERIAL MISSING

ACOUSTICAL MILL INSULATION ACOUSTICAL MILL INSULATION REMOVEDREMOVED

REMOVED FACING EXPOSES REMOVED FACING EXPOSES FOAM TO UV LIGHTFOAM TO UV LIGHT

FACING INTACT

UV LIGHT DESTROYS NEOPRENE UV LIGHT DESTROYS NEOPRENE FOAM INSULATIONFOAM INSULATION

WORN COWL GASKETINGWORN COWL GASKETING

MISSING HYDRAULIC TANK SEALMISSING HYDRAULIC TANK SEAL

NO DOOR GLASSNO DOOR GLASS

They can whisper to you now,

Don’t make them shout at you in the future