IE was working at the old bunker on 1 east. He was helping take roof jacks thru an air lock door. Once the they got the jacks thru the doors they were throwing them between two roof jacks that were already set to keep the walkway clear. The cuff of the IE glove hung on the jack and carried his hand into the jack that was set, causing a cut to the palm of his L hand, 6 sutures.