Manufacture and use of improved explosive composition

Mat for use with rock breaking tool

Material for multiple component penetrators and penetrators empl

Means for securing tubes to a tube sheet

Mechanical stemming construction for blast holes and method of u

Metal shaped charge liner with isotropic coating

Method and apparatus for blasthole stemming

Method and apparatus for charging boreholes with explosives

Method and apparatus for charging waterlogged boreholes with exp

Method and apparatus for controlled small-charge blasting by pre

Method and apparatus for controlled small-charge blasting by...

Method and apparatus for controlled small-charge blasting of har

Method and apparatus for disabling detonation system for a downh

Method and apparatus for extended time delay of the detonation o

Method and apparatus for flyrock control in small charge...

Method and apparatus for locking charges into a charge holder

Method and apparatus for overbalanced perforating and fracturing

Method and apparatus for perforating and fracturing in a borehol

Method and apparatus for positioning a shaped charge

Method and apparatus for pressure wave suppression in...