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Summit Materials
debuts on NYSE
Summit Materials Holdings Inc. made its debut as a public company on the New York Stock Exchange. Find out how much each share was worth when the company opened on the stock exchange.
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Brock, chairman and former CEO of Astec, dies
J. Don Brock, chairman and former CEO of Astec Industries, died Wednesday at Memorial Hospital in Chattanooga, Tenn. Learn about this Pit & Quarry Hall of Fame inductee's legacy in the aggregates industry.
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Bucyrus Monighan 6160 walking dragline
In this video, a Bucyrus Monighan 6160 walking dragline stockpiles ore at a mine in Nigeria, Africa. Watch this video to see the dragline in action, and find out how Bucyrus-Erie entered the walking dragline market.
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EQUIPMENT FOCUS
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SPONSORED PRODUCT
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Cut energy costs with the MCF PowerSaver
Requiring no integrated plant air to function, the MCF PowerSaver generates cost-savings of up to 50 percent more than conventional cleaning systems. The MCF is built to handle heavy dust loads and extreme environments, and it provides cleaning capacities up to 250,000 CFM.
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Still challenges ahead for the highway bill
Finally, politicians on both sides of the aisle seem to realize the need for a long-term transportation-funding bill. In his blog, editor Darren Constantino reflects on some of the challenges these legislators face.
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Lesson 3: Geology
Humans have used rocks for millions of years, and these rocks are geologically classified according to characteristics such as mineral and chemical composition, permeability, texture of the constituent particles and particle size. Lesson 3 of Pit & Quarry University provides a breakdown of crushed stone, sand and gravel formation and availablility. → MORE
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