FLUID PRESSURE ACTUATED ROCK DRILLS, PARTS AND ATTACHMENTS FOR ROCK DRILLS, STOPERS, JUMBO ARMS, AIR LEGS, AIR LINE OILERS, FLUID PRESSURE ACTUATED PAVING BREAKERS, FLUID PRESSURE ACTUATED CLAY SPADES, FLUID PRESSURE ACTUATED TAMPERS, BIT DETACHERS, SUMP PUMPS, AND DUST TANKS AND BOXES