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The blasting out of different sections of rocks against each other.

Related Terms

BLASTING

1. Cleaning materials by a blast of air that blows small abrasive particles against the surface. 2. The act of detonating an explosive.

BULLING BAR

A bar for ramming clay into cracks containing blasting charges which are about to be exploded.

CAP CRIMPER

A tool resembling a pliers that is used to press the open end of a blasting cap onto the safety fuse before placing the cap in the primer.

CONCUSSION

Shock waves in the air caused by an explosion underground or at the surface or by a heavy blow directly to the ground surface during excavation, quarrying, or blasting operations.

DELAY BLASTING CAP

A blasting cap which explodes at a definite time interval after the firing current has been passed by the exploder. Also known as delay-action detonator.

DETONATOR

A device, such as a blasting cap, employing a sensitive primary explosive to detonate a high-explosive charge.

DRY BLAST CLEANING

Cleaning of metallic surfaces by blasting with abrasive material traveling at a high velocity; abrasive may be accelerated by an air nozzle or a centrifugal wheel.

ELECTRICAL BLASTING CAP

A blasting cap ignited by electric current and not by a spark.

FAST-DELAY DETONATION

The firing of blasts by means of a blasting timer or millisecond delay caps.

HORIZONTAL AUGER

A rotary drill, usually powered by a gasoline engine, for making horizontal blasting holes in quarries and opencast pits.
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