Page 94 - Zero is Possible - Volume 3
P. 94
Quarry safety
Work safely around active faces (mainly applicable to hard rock quarries)
1 ENGINEERING/DESIGN (Quarry Safety Handbook pg. 1) 2 OPERATION
2.1 Pre-shift inspections (Quarry Safety Handbook pgs. 61 and 105)
0.2 x BENCH
HEIGHT +
4.5m
12m 75 °
12m
75°
BENCH
BENCH
CRACKS AND FISSURES
MAXIMUM BENCH HEIGHT MINIMUM BENCH WIDTH MAXIMUM BENCH ANGLE
ROCKFALL
OVERHANGS AND LOOSE ROCKS AND VISIBLE DISPLACEMENT
UNDERCUTS WEAK OR MISSING OR DEFORMATION AND
SUPPORT BULGING
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