Mine waste rock may be a valuable environmental and economic commodity in the future because of its potential as a store for carbon dioxide gas.
Michael Hitch, a mining engineer and geologist at the University of British Columbia, claims that in the future mining companies could offset their CO2 emissions using the rock, turning the waste material into a valuable product.
By: Philippa Warr, Edited by: Liat Clark
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via Wired.co.uk
http://www.wired.co.uk/news/archive/2012-11/15/mining-waste-carbon-storage
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