EMPLOYEES WERE STRIPPING CONCRETE FORMS FROM AN ELEVATED PLATFORM. AS INDIVIDUAL WAS PRYING A FORM LOOSE, A 2ND CAME LOOSE AND FELL A COUPLE FEET, STRIKING ANOTHER EMPL0YEE IN THE BACK OF HIS HEAD - BENEATH THE RATCHET OF HIS HARD HAT. EMPLOYEE WAS GIVEN 1ST AID THEN TAKEN TO HOSPITAL FOR OBSERVATION - BLEEDING HAD STOPPED. DR DECIDED TO APPLY 2-3 STAPLES.