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Solution Mining Research Institute
Site includes basic information on solution mining for salt, current research on solution mining technology and technologies for safely sealing and abandoning mined caverns, and information on association activities and conferences.
http://www.solutionmining.org/
World Mine Cost Data Exchange
A co-operative website for mining industry analysts containing downloadable spreadsheet models of all major metal mines, industry cost curves and a mine production database
http://www.minecost.com