EE WAS IN PROCESS OF RESPOSITIONING BOOM OF DRILL THESA. WAS SOME LOOSE DRAW ROCK ON MINE FLOOR. HER FOOT HAD SLIPPED OFF OF SOME OF THIS ROCK AND AT SOME TIME SHE HAD A MUSCLE SPASM IN HER LE G. SHE WAS STRAIGHTING HER LEG TO EASE THE SPASMAND EXTENDED HER FOOT UNDER DRILL BOOM AND WHEN SHE SET JACK DOWN IT SET DOWN ON HER TOE.