PERSON WAS BUILDING SOLID BLOCK WALL ACROSS ENTRY. PERSON WAS ON STEPLADDER AND ANOTHER PERSON WAS HANDING BLOCKS UP TO HIM PERSON WAS HOLDING BLOCK IN ARMS AND WHEN HE PUT BLOCK IN PLACE ON W ALL HE CAUGHT HIS RIGHT FOREARM BETWEEN TWO BLOCKS CAUSING INJURY. REQUIRED SUTURES TO CLOSE WOUND.