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School of Mines & Metallurgy at the University of Missouri-Rolla

In terms of rock strength, blasts today are often designed only considering rock density because rock generally gets stronger as it gets denser. Photo: iStock.com/xtrekx

Blasting mechanics: Material properties and powder factor

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Read about the true influence rock strength, rock structure, velocity and powder factor have on a quarry blast’s effectiveness. Keep Reading

Richard Ash presented key ratios 56 years ago that could be applied throughout surface blasting conditions to give comparisons between multiple types of operations. Photo: iStock.com/Xesai

Blasting mechanics revisited: Blasting design standards

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Knowing how to control a blast's effects is critical for your operation. Fortunately, basic principles emerged more than 50 years ago to simplify setup. Keep Reading

Photo: P&Q Staff

Blasting Mechanics Revisited: The mechanics of rock breakage

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Part 1 of a four-part Pit & Quarry series reflects on practical blasting concepts put forth more than a half-century ago, and how they remain highly relevant to aggregate producers today. Keep Reading

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