초록 ▼

A method and composition for blasting wherein boreholes are loaded with pre-determined quantities of a high velocity explosive and a low velocity explosive. The high velocity explosive extends in a substantially continuous matter for a pre-determined length along the borehole column and a low veloci

A method and composition for blasting wherein boreholes are loaded with pre-determined quantities of a high velocity explosive and a low velocity explosive. The high velocity explosive extends in a substantially continuous matter for a pre-determined length along the borehole column and a low velocity propellant is placed at pre-determined locations within the high velocity explosive column such that the high velocity explosive detonates substantially along its length in the column thus initiating a low velocity explosion at various predetermined points at the location of the low velocity explosive. The resulting explosion produces minimum ground vibration and air shock waves while substantially breaking and casting the rock material with minimal flyrock.

대표청구항 ▼

A blasting composition used within a borehole comprising: a quantity of a high velocity explosive agent, and a quantity of a low velocity, 1.3 rocket propellant, wherein said high velocity explosive agent includes a chemical composition different than said propellant and wherein said blasting compos

A blasting composition used within a borehole comprising: a quantity of a high velocity explosive agent, and a quantity of a low velocity, 1.3 rocket propellant, wherein said high velocity explosive agent includes a chemical composition different than said propellant and wherein said blasting composition is used as at least a non-booster explosive within said borehole.