TWO EMPLOYEES WERE UNLOADING A BUNDLE OF 9' MATSFROM MINE TENDER. THEY WERE USING A JIB CRANE W/CHAIN. THE MATS HUNG UP ON THE TAILGATE OF MINE TENDER. HE TRIED TO FREE THEM AND AS THEY CAME A WAY FROM THE TAILGATE THEY FELL ON HIS RIGHT INDEX FINGER SMASHING IT. TIP OF FINGER WAS FRACTURED AND NEEDED SUTURES.