Watts Mining Company Inc · Tipo de accidente, sin lesiones
THE ROOF FALL OCCURED APPROX. 120 FEET OUTBY THE FACE OF THE NO.4 WORKING PLACE, ORIGNATEING IN AN INTERSECTION. CONTRIBUTING PACBORS WERE AN UNDETECTED HORSE BACK EXTENDING RIB APPROX. 20 FEE T LONG AND APPROX. 20 FEET WIDE, MEZIMUM THICKNESS APPROX 54 INCHES.