Picking a Perfect Primary

IMPACT CRUSHER AT AN APAC-KANSAS CITY QUARRY HAS THE OPERATION PRIMED FOR SUCCESS. By Mark S. Kuhar Dozens of contractors, businesses, municipalities, and state and federal agencies count on the crushed limestone aggregate produced at APAC-Kansas City quarries. One facility produces more than 400,000 tpy of crushed limestone for concrete and asphalt aggregate used for projects throughout the Kansas City…

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DOJ Rules Martin Marietta Must Divest

June 27, 2014 – The Department of Justice has spoken. I’m not sure they know what they are talking about, but they HAVE spoken. Martin Marietta Materials must divest an Oklahoma quarry and two Texas rail yards in order to proceed with its proposed $2.7 billion acquisition of Texas Industries, according to the agency. Without the divestiture, the proposed acquisition was…

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Lafarge, Lehigh, Vulcan Lead Adoption of New Mobile Apps

After initial deployments with four major integrated producers and a top precast/prestressed operator, Catavolt has unveiled technology supporting rapid, low-cost development of custom apps providing geographic market intelligence and perspective, plus customer relationship management program-grade data.

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CEMCO Offers Vertical Shaft Impact Crusher Course

Operators and plant managers of aggregate, rock and mineral mines can learn about the physics of processing materials with vertical shaft impact (VSI) crushers during a two-day course at CEMCO Inc. in Belen, N.M. “The goal for anyone in this industry is to reduce operating costs and improve the bottom line,” CEMCO President Neil Hise said. “We want to teach…

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Pioneering Screen Media Change-Outs

By Brian Barlow The solution? A hydraulic clamp rail system. In early 2009, I received a fascinating telephone call from a long-time screen media salesperson for a manufacturer with whom I had worked closely as an outside resource for several years. Mark Roppo was calling to ask in confidence if he could share a project with me that he had…

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CASE Wheel Loader Offers Burn Power

CASE Construction Equipment introduced the new CASE 1221F wheel loader, the newest and largest model in the company’s F Series wheel loader line. Designed with an 11.9-liter Tier 4 Interim-certified engine that delivers up to 355 hp (265 kW), the CASE 1221F is built for heavy earthmoving and loading applications such as those encountered in aggregate and mining operations. Enhancements…

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NSSGA Submits Comments to OSHA

The National Stone, Sand and Gravel Association (NSSGA) filed formal comments with the U.S. Occupational Safety and Health Administration (OSHA) on the agency’s proposed rule on occupational exposure to respirable crystalline silica.

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