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ROOF EVALUATION AND EXAMINATION

ROOF EVALUATION AND EXAMINATION. OVER 200 ROOF AND RIB ACCIDENTS HAVE OCCURRED DURING ROOF TESTING AND SCALING. (1990-1996) ALWAYS STAND UNDER SUPPORTED TOP WHEN SCALING AND TESTING ROOF . ROOF EXAMINATIONS. LOOK FIRST SOUND ROOF BAR DOWN LOOSE ROOF/RIBS

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ROOF EVALUATION AND EXAMINATION

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  1. ROOF EVALUATION AND EXAMINATION

  2. OVER 200 ROOF AND RIB ACCIDENTS HAVE OCCURRED DURING ROOF TESTING AND SCALING. (1990-1996) • ALWAYS STAND UNDER SUPPORTED TOP WHEN SCALING AND TESTING ROOF.

  3. ROOF EXAMINATIONS • LOOK FIRST • SOUND ROOF • BAR DOWN LOOSE ROOF/RIBS • LOOK FOR ROOF CRACKS CROSSING ENTRY/CROSSCUT 0R PARALLELING ENTRY/CROSSCUT. • LOOK FOR ROOF SLIPS/CUTTERS • LOOK FOR KETTLE BOTTOMS

  4. ROOF EXAMINATIONS • CHECK FOR BULGING ROOF (CENTER OF ENTRY/ CROSSCUT) • CHECK FOR TRANSITION ZONES • ALWAYS CHECK: • ROOF BOLT PLATES FOR LOADING • EXAMINE ROOF BOLT TEST HOLES • RIBS FOR SIGNS OF WEIGHT(SPALLING) • POST/CRIBS FOR SIGNS OF LOADING

  5. OVER 80% OF THE FALLS IN DISTRICT 5 HAVE OCCURRED IN OR EXTENDED INTO AN INTERSECTION

  6. KNOW YOUR ROOF CONTROL PLAN • FOLLOW THE APPROVED MINING SEQUENCE • STAY OUTBY THE LAST OPEN CROSSCUT IF YOU DON’T HAVE A JOB AT THE FACE

  7. SPECIAL PRACTICES FOR MINES WITH SHALLOW COVER • TAKE SPECIAL PRECAUTIONS WHEN APPROACHING WITHIN 200 FEET OF THE OUTCROP. • TAKE SPECIAL PRECAUTIONS WHEN MINE COVER IS LESS THAN 100 FEET (CHECK MINE MAP)

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