Drill bolt holes into roofs at specified distances from ribs or adjacent bolts.
Pull down loose rock that cannot be supported.
Position bolting machines, and insert drill bits into chucks.
Perform safety checks on equipment before operating.
Perform tests to determine if methane gas is present.
Force bolts into holes, using hydraulic mechanisms of self-propelled bolting machines.
Perform ventilation tasks, such as hanging ventilation curtains and tubes.
Dust rocks after bolting.
Install various types of bolts including truss, glue, and resin bolts, traversing entire ceiling spans.
Drill test holes and test bolts for specified tension, using torque wrenches.