EE WAS PULLING THE SHIELD ON THE C-5 LONGWALL FACE WHEN HE REACHED FOR THE CONTROLS THAT OPERATES THE SHIELD FUNCTIONS, A SHIELD TO SHIELD HIGHTPRESSURE HOSE BURST, SPRAYING EMULSION ON EE. EE SAID THE HOSE DID NOT STRIKE HIM HOWEVER, THE PRESSURE OF THE EMULSION CAUSED HIM TO BE KNOCKED TO FLOOR & HIS LEFT KNEE STRUCK A RELAY BAR THIS RESULTED IN FRACTURE TO LEFT PATELLA