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Vari-Stem Contains Explosive Energy Within Rock Mass

Vari-Stem PlugsVari-Stem Plugs work by creating a blocking effect within the drill hole by wedging the stemming material between the drill hole wall and plug. Upon detonation of the explosives, the plug is forced upward into the stemming material and "locks up." The explosive gases and energy are prevented from traveling (venting) up through the drill hole, and instead are contained within the rock mass for milliseconds longer than non-plugged blasts.

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Drilling and Blasting Safety is Critically Important

Atlas-Copco FlexiROC-T30MSHA’s Accident Prevention Program includes tips on drilling and blasting safety. Following are several items the agency wants to bring to the attention of plant operators or contractors performing drilling and blasting operations in quarries.

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Furukawa DCR20 Down-the-Hole-Drill Features Easy Controls

Furukawa DCR20The DCR20 from Furukawa Rock Drill has established itself as a reliable, productive resource for drilling operations, according to the company. These drills have been tested in soft, medium and hard rock conditions with multiple end-users and applications.

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