Apparatus for charging rising drillholes

Apparatus for severing tubular members

Automatically controlled rock drilling apparatus

Blasting method for reducing nitrogen oxide fumes

Borehole charging method including toroidal transformer cores

Borehole stemming with a column of liquefiable and/or vaporizabl

Carrier for explosive primer and method of using same

Charging apparatus for cartridged explosives

Charging large diameter vertical boreholes

Delivery of emulsion explosives

Detonation arrestor device for bulk explosive materials transfer

Downhole perforating method and apparatus using secondary explos

Emulsion that is compatible with reactive sulfide/pyrite ores

Enclosed perforating gun with expendable carrier

Expandable explosive and stemming cartridge

Explosive charging apparatus for charging explosive pellets to a

Explosive charging apparatus for rock drilling

Explosive displacing bore hole tube

Field-connected explosive booster for initiating low-energy expl

Impermeable and composite perforating gun assembly components