EE WAS INSTALLING A SHOE RETURN CABLE ON DRAGLINE. THE CABLE HAD BEEN THREADED THROUGH SHEAVE & A STRAP WAS ATTACHED TO A LOADER T0 STRETCH THE CABLE BEFORE TIGHTENING THE CLAMPS. THE CLAMP WAS ON THE END OF THE CABLE & IT SLIPPED. A BOLT FROM THE CLAMP HIT THE EE IN THE MOUTH. IT FRACTURED ONE TOOTH & ANOTHER WILL NEED A CROWN. ONE OF THE TEETH HAD TO BE EXTRACTED.