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From the quarry to the cemetery

Jul 01, 2015

From the quarry to the cemetery

‘When our forefathers crossed the ocean and settled in this country, it was not long before the tombstone cutter made his appearance, and with his wagon load of slate and marble slabs, he journeyed through the towns, and when he ...

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Will a new Supreme Court ruling mean put an end to the doctrine of deference?

Jul 01, 2015

Will a new Supreme Court ruling mean put an end to the doctrine of deference?

In the October 2011 edition of Aggregates Manager, I wrote an article entitled “No Notice Required: MSHA’s disregard for rulemaking authority makes its way to the Review Commission” that detailed the Mine Safety and Health Administration’s (MSHA) substantive change to ...

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Location is key for Dolese Bros. Co.’s Davis Quarry

Jul 01, 2015

Location is key for Dolese Bros. Co.’s Davis Quarry

              In the late 1800s, four brothers started a public works construction company in the Chicago area, Dolese Bros. Co. When the oldest brother left the company, the remaining three brothers changed the company’s focus to supplying railroad ballast and followed ...

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Five factors of fuel efficiency for mobile equipment

Jul 01, 2015

Five factors of fuel efficiency for mobile equipment

Fuel expense in owning and operating aggregates equipment is a constant and will account for about 50 percent of total machine operating costs. Fuel prices have recently been on the decline, but based on history, this trend will soon reverse. ...

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Paving Barre’s future

Jun 08, 2015

Paving Barre’s future

‘The confusion…between hardness and toughness, has led to serious practical errors in the choice of materials for roads, inasmuch as the attention has been often directed exclusively to their hardness , without any regard being had of their toughness .’ Charles ...

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The nation’s top 25 crushed stone producers

Jun 04, 2015

The nation’s  top 25 crushed stone producers

Domestic production data for crushed stone were derived by the U.S. Geological Survey (USGS) from voluntary surveys of U.S. producers. In 2013, a total of 1,457 companies produced or sold crushed stone from 3,688 operations with 3,837 quarries and 204 ...

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Coming attractions: Crystalline silica rulemaking

Jun 02, 2015

Coming attractions: Crystalline silica rulemaking

The Mine Safety and Health Administration’s (MSHA) current standards limit exposures to quartz (crystalline silica) in respirable dust. The metal and non-metal mining industry standard is based on the 1973 American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Values ...

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MSHA Workplace Examinations a Front Burner Issue for Metal and Non-metal Mines

Jun 01, 2015

MSHA Workplace Examinations a Front Burner Issue for Metal and Non-metal Mines

In late 2014, the Mine Safety and Health Administration (MSHA) published its regulatory agenda for 2015. MSHA will consider how operators perform workplace examinations via a request for information from stakeholders in June 2015 to address fatalities in the metal/non-metal ...

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May 2015

May 01, 2015

May 2015

 Squeeze Play: A Different Take on Dewatering

MSHA’s new RTLB compliance tool may come with a price

May 01, 2015

MSHA’s new RTLB compliance tool may come with a price

During a stakeholder meeting on Feb. 25, 2015, the Mine Safety and Health Administration (MSHA) unveiled a new online web tool to provide information on a mine site’s compliance with the ‘Rules to Live By’ standards.  ‘Rules to Live By’ ...

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A vibrating grizzly feeder not only absorbs the shock of large dump loads, it also improves the efficiency of the primary crusher

May 01, 2015

A vibrating grizzly feeder not only absorbs the shock of large dump loads, it also improves the efficiency of the primary crusher

In the world of aggregate crushing, the word “feeder” can apply to many different devices. There are roller belt feeders, apron feeders, electromagnetic feeders, pan feeders, and others. This article focuses on a feeder type that plays a critical role ...

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In the 1800s, teamsters got an early lesson on the economics of transporting granite during the construction of Vermont’s second state house

May 01, 2015

In the 1800s, teamsters got an early lesson on the economics of transporting granite during the construction of Vermont’s second state house

“The walls of the exterior are of granite, which shews the architectural details to great advantage.” — Zaddock Thompson, 1842, History of Vermont, Part Second, p. 132 Barre Granite, the topic of this series of articles, had achieved recognition as an ...

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