Pit & Quarry, February 2019
materials characteristics and blasting techniques employed P Q Anthony Konya is the senior explosive engineer for Precision Blasting Services who consults around the world in rock blasting and vibration from blasting is and an instructor for the Academy of Blasting and Explosive Technology Calvin J Konya is the president of Precision Blasting Services and director for the Academy of Blasting Explosive Technology consulting and training worldwide in rock blasting vibration and emulsion manufacturing M M YOU HAVE THE AMBITION W The Drillers Choice www mincon com useful after very little practice not only for the initial design of blasts but also in providing guidelines upon which to correct normal blasting difficulties which invariably occur from time to time However one must realize that the standards in themselves are not cure alls since blasting as such depends heavily on cost and safety considerations as well as on the explosive grades used the About this four part series I n 1963 Pit Quarry published a series of articles on the mechanics of blasting authored by Richard Ash a longtime professor of mining engineering at the School of Mines Metallurgy at the University of Missouri Rolla The content within each article was ahead of its time putting forth cutting edge concepts about the mechanics of rock breakage standards for blasting design the characteristics of explosives and material properties powder factor and the cost of blasting The Academy of Blasting Explosive Technology including Anthony Konya and Dr Calvin J Konya pay tribute to the time honored principles Ash put forth more than 50 years ago with a special 2019 series for Pit Quarry readers In their Blasting Mechanics Revisited series the Konyas look back on Ashs work and explore how modern day technology and methods currently fit into each of the areas Ash covered a half century ago Look for these additional articles from the Konyas within P Q in the months to come Part 1 The Mechanics of Rock Breakage January Part 2 Blast Design Standards February Part 3 Characteristics of Explosives March Part 4 Material Properties Powder Factor Blasting Cost April pitandquarry com February 2019 PIT QUARRY 69
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