EE WAS WORKING ALONG WITH 2 OTHER MEN OTHER AND ANOTHER TO REMOVE THE TOP PLATE ON THE COAL MILL FAN HOUSING. THEY WERE USING A CHAIN FALL ON TH HOOKED TO AN EYE ONT HE PLATE. EE HAD HIS THUMB IN PINCH POINT WHEN THE PLATE LET GO HE HAD 4 SUTURES TO CLOSE THE CUT.