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Pit & Quarry Weekly Report: Drilling & Blasting Special
JUNE 20, 2019
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Photo: Enaex  
Benchmarking your operation’s drilling & blasting process
Aggregate producers are divided on what’s most essential to a successful drilling operation. An exclusive P&Q survey on drilling and blasting provides producers a means to measure themselves.
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Photo: WipWare  
Easily corrected blasting deficiencies
Equipment manufacturers offer advice that aggregate producers can put to use to enhance their blasting operations. Check out what they had to say.
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Photo: Walarput  
Blasting mechanics revisited: Characteristics of explosives
Selecting the right tool for the right job is just as critical with explosives as it is with a hammer. With that in mind, here's an overview of explosives and how they work.
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Evaluating the effectiveness of powder factor
Powder factor is a design methodology rooted in the idea that a set number of pounds of explosives per cubic yard of rock will give specific desired blast results. But is it a worthwhile technique?
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Photo: Caterpillar
A Robbins rotary drill operates at a Jasper, Alabama, quarry for A.E. Burgess Contracting Co. This model drill, Caterpillar explains, helped cut the time required to produce 35,000 cu. yd. of shot rock.
P&Q file photo, April 1918
In the April 1918 edition of Pit & Quarry, this drill was showcased in an article on the new plant at the Ohio Hydrate & Supply Co.’s operation in Woodville, Ohio. According to the article, this drill makes 5 5/8-in. holes for blasting processes.
Source: P&Q archive
Equipment supply-and-demand conundrums
Manufacturers are getting creative to meet the needs of producers who are increasingly pressed for heavy machinery, processing equipment and parts.
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How producers, manufacturers prioritize employee safety
Safety is the focus in protecting manufacturers' employees and for the producers who incorporate new tech into their operations.
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Cover photo: BuildWitt Media Group

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