INJURED WAS INSTALLING CABLE ROOF BOLTS. HE HAD FINISHED TORQUING THE BOLT & WAS RETRACTING THE BOOM MAST. HE PLACED HIS LEFT HAND ON THE BOOM MAST. AS IT RETRACTED, THE BOOM MAST CAUGHT HIS L EFT GLOVE & PULLED IT BETWEEN THE BOOM MAST & FRAMEWORK RESULTING IN A FRACTURE & LACERATION.