EE WAS OPERATING A 3 TON COM-A-LONG. ONE END WAS ATTACHED TO A 3/8"" CHAIN THAT WAS SECURED TO A BOOM LACING PIPE ON A 1370 DRAGLINE. THE OTHER END WENT TO THE SOCKET END OF AN INTERMEDIATE SUS PENSION CABLE THAT WAS BEING PULLED INTO POSITION TO SECURE TO THE BOLT STRUCTURE. ANOTHER 3-TONCOM-A-LONG WAS BEING USED IN TANDEM TO PULL IN CBLE. CHAIN BROKE, CHAIN/COM-A-LONG HIT IN FACE.