EMPLOYEE STATED THAT WHILE HE WAS STANDING ON AN ""I"" BEAM THAT WAS BEING UNLOADED OFF OF A SCOOP, THE SCOOP MOVED BACK AND THE BEAM SLID OFF OF SCOOP BUCKET CAUSING THE BEAM TO TWIST RESULTING IN EMPLOYEE FALLING ON HIS LEFT SIDE CAUSING PAIN IN HIS LEFT RIB AREA. EMPLOYEE WALKED NORMALLY OUT OF THE MINE WITH NO PROBLEMS OF BREATHING OR DISCOMFORT. WENT TO HOSPITAL DIAGNOSIS CONTUS