EMPLOYEE WAS USING ON SHIELD CONTROLS TO LOWER A SHIELD (150) FROM THE TOP. WHEN THE SHIELD WAS LOWERED IT ADVANCED ITSELF DUE TO A STUCK SOLONOID. WHEN THE SHIELD ADVANCED IT PINCHED HIM AGAI NST THE PANLINE, BRUISING HIS CHEST AND BACK. NODAMAGE OR IMPAIRMENT OCCURRED TO THE MINING OPER OR TO THE EQUIPMENT. EE SHOULD HAVE CHECKED TO OTHER CONTROLS BEFORE LOWERING SHIELD. JOB SKIL