Tags: U.S. Geological Survey

U.S. aggregates production rises in Q3 2013

Dec 10, 2013

U.S. aggregates production rises in Q3 2013

Production of crushed stone and sand and gravel is up year over year for the third quarter of 2013. About 367 million of crushed stone was produced and shipped for consumption in the U.S. in the third quarter of 2013, an ...

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Scientists point to quarry blast as cause of Illinois earthquake

Nov 21, 2013

Scientists point to quarry blast as cause of Illinois earthquake

Officials with the U.S. Geological Survey (USGS) said on Friday that a blast at a quarry in McCook, Illinois, likely caused a 3.2-magnitude tremor earlier this month, according to a report from the Chicago Tribune. USGS officials added that the tremor ...

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Did a quarry blast cause a 3.2-magnitude tremor?

Nov 11, 2013

Did a quarry blast cause a 3.2-magnitude tremor?

Early last week, a large tremor shook home and businesses in and around McCook, Illinois. The 3.2-magnitude tremor was felt as far away as Wisconsin, according to a Chicago Tribune report. Initially, reports pointed to a possible link between the tremor and ...

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A Visit to the Dentist

Oct 01, 2013

A Visit to the Dentist

Fluorspar mining endures trials and tribulations that make a geologist wince.   By Bill Langer   You know the drill. I was reclining in the dentist chair while a hygienist jabbed a sharp pick into my gums. She paused and asked: “So you’re a ...

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A Taste of Barite

Sep 01, 2013

A Taste of Barite

As prices continue to rise, our erstwhile columnist shares his gut feeling about the mineral’s future.   By Bill Langer   Iam intimately familiar with a mineral called Barite, a.k.a. barium sulfate. This is because I recently underwent a computed tomography (CT) scan that used ...

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The Nation’s Top 25 Construction Aggregates Producers

Apr 01, 2013

The Nation’s Top 25 Construction Aggregates Producers

2011 marked the first increase in production since 2006, with slight price increases as well.   U.S. production of construction aggregates in 2011 was 2.17 billion short tons, valued at $17.2 billion, free on board (f.o.b.) at plant. Construction aggregates production decreased ...

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2012 production stats end on a low note

Mar 01, 2013

2012 production stats end on a low note

After a fairly robust beginning, 2012 production ended on a whimper, according to a new report from the U.S. Geological Survey. Crushed Stone and Sand and Gravel in the Fourth Quarter 2012 indicates that an estimated 282 million metric tons of ...

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Scorpions and Swedish Industrialists

Mar 01, 2013

Scorpions and Swedish Industrialists

What in the world is he talkin’ about?   By Bill Langer   The scene: Our home in Anthem, Ariz., a suburb of Phoenix, located in the Sonoran Desert. It was 8:30 p.m. My wife, Pam, turned on the light in the bedroom and sent ...

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Aging Aggregate Equipment

Aug 01, 2012

As operators defer capital expenditures, iron continues to age, but our exclusive survey shows that operators are beginning to expand capital expenditures.   Repair, rebuild, or replace? It’s the conundrum facing many operators throughout the aggregate industry. Over the last six years, ...

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The Devil Made Me Do It

Aug 01, 2012

The Devil Made Me Do It

What you see is what you get — in reel life and in real life.   While eating dinner the other day, my wife asked what my next Carved In Stone article was going to be about. “What you see is what ...

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Bad News, Good News, and Really Good News

May 01, 2012

A trip to the repair shop leads to insights on geologic formations and thermal expansion valves. By Bill Langer This morning, I got up bright and early and took our 2004 mini-van to a little repair shop in North Phoenix — the ...

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Rock Science

Apr 01, 2012

Rock Science

Consider the impact of the physical and chemical properties of the parts when evaluating the whole. By Bill Langer After I retired from the U.S. Geological Survey last November, my wife, Pam, and I moved to Phoenix, Ariz. We currently live with ...

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