A drilling contractor was pulling drill rods on a top drive drill using a clamshell arrangement. During this process, the clamshell hook would not lower under its own weight and the driller identified that the utility winch rope had spooled incorrectly and was stuck onto the winch drum mounted on top of the mast.
Read MoreA high-pressure air hose burst on a surface exploration drill rig while the driller was attempting to clear a blockage in the hose.
Read MoreWhile pulling drill rods the “D” Shackle used to connect the hoist rope to the hoist plug failed catastrophically.
Read MoreThe injured man inserted his arm into the cyclone to clear the blockage and while his arm was still in the cyclone, the Driller closed the cover plate.
Read MoreAs the pedal depressed it opened the foot clamp and released the drillstring which fell into the hole causing the hoisting plug to hit the top of the clamp. The force with which the hoisting plug hit the foot clamp caused the foot clamp pedal to lift very abruptly.
Read MoreJust as the injured man was about to loosen the drill rod the chuck and therefore the drill rod rotated unexpectedly pulling the drill rig assistant towards the drill rig, jamming his right hand between the spanner and the substructure of the drill rig.
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