logo com4

Communities At Risk Frac Sand Mining In The Upper Midwest

Isaac orr, research fellow at the heartland institute, and mark krumenacher, senior principal and senior vice president of gza geoenvironmental, inc., have written a series of four policy studies investigating the economic, environmental, social, and roadway impacts of industrial silica sand mining, also known as frac sand mining.These studies are intended to help local policymakers and.

Copyright © 2020 Henan Mining Machinery Co., ltd. All rights reserved.Sitemap