EE WAS DOING CLEANUP IN MAIN SHOP, A JEEP WAS SITTING IN SHOP WITH NO ENGINE. HOOD OF JEEP WAS UP. HIM AND ANOTHER EE STARTED PUSHING JEEP BACK BY HAND, ONE OF THE OVERHEAD HOIST HOOKS WAS HAN GING DOWN BEHIND HOOD. HOOK ON HOIST CAUSED HOOD ON JEEP TO COME DOWN STRIKING EE IN FACE.