Apparatus and method for coring and/or drilling

Apparatus and method for obtaining a core at in situ pressure

Apparatus and method for obtaining subterranean samples

Apparatus and method to drill and lift core-drilled...

Apparatus for hard rock sidewall coring a borehole

Apparatus for obtaining a soil core sample

Apparatus for obtaining a soil core sample

Apparatus for recovering ground soil samples

Assembly and method for extracting discrete soil samples

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

Device for high-speed boring of stepped post-holes

Device to facilitate creating foxholes with explosives and metho

Digging tool

Double sleeve soil tester

Drive point device