Pit & Quarry Weekly Report

JUNE 20, 2019

INSIGHTS

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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.

FEATURES

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.

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.

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?

Utilizing bulk emulsions in quarry blasting

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

A LOOK BACK

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.

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

FROM THE MAGAZINE

view the latest digital edition of Pit & Quarry magazine

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.

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.

INDUSTRY RESOURCES

Association of Equipment Manufacturers

National Stone, Sand & Gravel Association

Portable Plants magazine

U.S. Geological Survey

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