Auger tool for boring
Automated seismic geophone deployment
Balanced torque drilling system
Boring and compacting tool
Boring head for a subsurface soil-boring apparatus
Boring ram
Coiled tubing tools for jet drilling of deviated wells
Convertible vibratory or rotary core drill apparatus
Core drilling method and apparatus
Core sampler apparatus with specific attachment means
Core sampling method and core sampler therefor
Corer-grinder
Coring bit and method for obtaining a material core sample
Coupling for dual member pipe
Deviation device
Device for boring holes in the ground
Device for drilling holes in the ground
Device for facilitating insertion of a beach umbrella in sand
Device for high-speed boring of stepped post-holes
Device for making holes in soil