OPEN CHAMBER

DRILLS FOR BREAKING ROCK, BORING AND PENETRATING THE EARTH, AND TUNNELING AND MINING, ALL USING EXPLOSIVELY PROPELLED PROJECTILES, DRILLS, ENGINE STARTERS, NAIL DRIVERS, AND AIR COMPRESSORS; ALL USING EXPLOSIVE PROPULSION EXPLOSIVE CHARGES

AUTOMATIC, SEMI-AUTOMATIC, AND MANUAL, PISTOLS, RIFLES, MACHINE GUNS, SINGLE AND MULTIPLE BARREL CANONS, AND AMMUNITION THEREFOR