Study: Frac Sand Mining a Boon for Employment, Earnings, Economies

A new Policy Study from The Heartland Institute shows industrial sand mining has been “a significant driver of economic growth across the Upper Midwest.” If done in an environmentally responsible manner, the study finds, “it can be an important source of employment and earnings for decades to come.” The study, titled “Economic Impacts of Industrial Silica Sand (Frac Sand) Mining,” is the second in…

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Making River Rock Round

February 14, 2014 – Here is some interesting research. For centuries, geologists have recognized that the rocks that line riverbeds tend to be smaller and rounder further downstream. But these experts have not agreed on the reason these patterns exist. Abrasion causes rocks to grind down and become rounder as they are transported down the river. Does this grinding reduce the size of…

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