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drilling and blasting

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

Evaluating the effectiveness of powder factor

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Powder factor design, which does not provide any indication of breakage, muck pile characteristics or environmental considerations, is a dated approach that ultimately costs producers. Keep Reading

Photo courtesy of WipWare

Easily corrected blasting deficiencies

Equipment manufacturers offer simple measures aggregate producers can deploy to enhance their operation. Keep Reading

The majority of aggregate producers who manage their own blasts do so to have a better handle on costs. Photo courtesy of Enaex.

Benchmarking your operation’s drilling & blasting process

An exclusive P&Q survey on drilling and blasting provides aggregate producers a means to measure themselves. Keep Reading

Arizona Drilling & Blasting is a division of Fisher Sand and Gravel. Photo courtesy of Pete Tramontanas.

P&Q Profile: Arizona Drilling & Blasting’s Pete Tramontanas

P&Q's conversation with Pete Tramontanas, the general manager of Arizona Drilling & Blasting. Keep Reading

John Capers, right, served on the NFPA (National Fire Protection Association) 495 and 498 Committee on Explosives and as a technical advisor and reviewer for many publications and programs. Photo courtesy of Austin Powder

Austin Powder’s Capers honored for blasting expertise

Technical manager John Capers was presented a special award at this year's Ohio Drilling & Blasting Conference. Keep Reading

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

Today’s commercial explosives are compound mixtures that contain carbon, hydrogen, oxygen and nitrogen. Photo: iStock.com/Pattadis Walarput

Blasting mechanics revisited: Characteristics of explosives

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This feature story explores modern blasting products, including the function and selection of explosives based on properties and cost for your blasting process. 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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