PERSON WAS ADVANCING SHEILDS ON LONGWALL DURING PRODUCTION. HE WAS ADVANCING #102 SUPPORT FROM #101 SUPPORT WHEN ROCK FELL BEHIND SHEILDS. PUSHING THEM FORWARD TOWARDS PANLINE, INJURED WAS STRUCK ON THE HEAD BY THE CIU CONTROL BOX ON 101SUPPORT WHEN IT WASH PUSHED FORWARD. PERSON RECEIVED LACERATION ABOVE RIGHT EYE.