Air delivery system for a direct push drilling swivel

Auger and retaining shell assembly

Auger and sweeper assembly

Auxiliary equipment for use with drilling apparatus

Banjo box and blooie line spool

Bit packer for dual tube drilling

Blasthole drill having a drill pipe seal assembly

Check valve sub

Chip sampler

Connection device for forming a fluid supply

Continuous circulation apparatus for air drilling well bore oper

Continuous injection of an inert gas through a drill rig for dri

Cooling and flushing means for tools used for working rock

Core and water collector

Coupling structure for a compound drill stem

Cuttings injection system and method

Device attachable to power drills for removal of material releas

Device for collecting drilled material and dust

Device for containing and removing drilling slurry

Device for obtaining dust from minerals