Tags: U.S. Gelological Survey
Production of aggregates had a huge increase in production during the second quarter of 2014 compared to the first quarter of the year. According to a quarterly U.S. Geological Survey (USGS), domestic production of construction materials (cement, construction sand and gravel, crushed ...
A gathering of geologists, planners, aggregate operators, and others sparks interesting dialogue on geology and mining. I recently attended the 48th Forum on the Geology of Industrial Minerals, hosted by the Arizona Geological Survey. This has always been one of my ...
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