More from Therese Dunphy

Therese Dunphy

MSHA extends comment period on proposed penalty changes

Sep 15, 2014

MSHA extends comment period on proposed penalty changes

On Sept. 15, the Mine Safety and Health Administration (MSHA) announced that on Sept. 16 it would publish a notice in the Federal Register extending the comment period from Sept. 29 to Dec. 3, 2014, on its proposed rule for Criteria ...

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VIDEO: Dredging at Teichert’s Hallwood Plant

Sep 15, 2014

VIDEO: Dredging at Teichert’s Hallwood Plant

At Teichert Materials' Hallwood Plant, near Marysville, Calif., the operator mines aggregate on 711 acres in the Yuba Goldfields along the banks of the Yuba River. While loaders free mine the dredger tailings above the water table, sand below the water ...

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Kleemann rolls out lighter mobile jaw plants

Sep 12, 2014

Kleemann rolls out lighter mobile jaw plants

Kleemann’s new mobile jaw crushers, the Mobicat MC 110Ri EVO and MC 110 Zi EVO were completely redesigned with lighter transportation weights for improved portability. They weigh in at 85,000 pounds and 87,100 pounds, respectively. The MC 110Ri EVO has ...

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Tales from a 1922 sand and gravel convention

Sep 12, 2014

Tales from a 1922 sand and gravel convention

My household is obsessed with Google Ngram Viewer, an online graphing tool inspired by a program called Bookworm, that was developed by brainy folks at Harvard and MIT. Ngram charts the annual count of n-grams (or letter combinations), words, and ...

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Case introduces its first SCR dozers

Sep 08, 2014

Case introduces its first SCR dozers

Case Construction Equipment introduces its M Series of dozers. The line includes five models ranging from 92 to 214 net horsepower. Key features include what Case describes as best-in-class drawbar pull, increased horsepower ratings, the first selective catalytic reduction technology ...

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Take a photo tour of Teichert’s Hallwood Plant

Sep 05, 2014

Take a photo tour of Teichert’s Hallwood Plant

At Teichert Materials'  Hallwood Plant near Marysville, Calif., loaders free mine dredger tailings from a former gold mine.         Loaders place rock and gravel from the tailings into a feeder.             Material is fed onto a conveyor and transported to the processing plant.           High-grade sand ...

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Supply Lines

Sep 01, 2014

Supply Lines

    Cuts fuel consumption in half Field studies for Atlas Copco’s new FlexiROC T45 with fixed boom show that the unit uses half as much fuel as similar rigs using the same rock drill, depending on rock conditions. The COP 3060 rock ...

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Data Mining

Sep 01, 2014

Data Mining

Roll Outs

Sep 01, 2014

Roll Outs

Quick load cycles The Tier 4 Final L250H wheel loader from Volvo Construction Equipment is said to tackle heavy tasks with superior performance and heightened safety. Fuel efficiency is enhanced through OptiShift technology, which combines Volvo’s Reverse By Braking technology and ...

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Large secondary crushing

Aug 29, 2014

Large secondary crushing

KPI-JCI and Astec Mobile Screens’ Kodiak Plus K500+ crusher is the newest and largest to its family of cone crushers. The 500-horsepower, remote-adjust cone crusher fills a demand for larger secondary and cone crushers in high-production operations. A new hybrid ...

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PHOTOS, VIDEO: Take a virtual tour of Unimin’s underground operation in Guion, Ark.

Aug 27, 2014

PHOTOS, VIDEO: Take a virtual tour of Unimin’s underground operation in Guion, Ark.

  Unimin's Guion Plant, located in the foothills of the Ozark Mountains, has an underground mine, a surface quarry, and a sand processing plant. The nearly 100-year-old operation was incorporated in 1917 by the Duncan family and run by several generations ...

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Sneak peek: Inside Unimin’s safety strategies

Aug 25, 2014

Sneak peek: Inside Unimin’s safety strategies

Be sure to check out our plant profile of Unimin's underground operation in Guion, Ark., in the September issue of Aggregates Manager. The company has not only created an interesting and unique underground operation, but it has done so while establishing an ...

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