For those interested in libraries that provide resources and services that deal with mining, the environment, natural resources, and energy research; The Colorado Lawyer has published an article that you should know about.  The November 2013 issue of The Colorado Lawyer introduces the reader to "Colorado Libraries for Mining, Environmental, Natural Resources, and Energy Researchers," highlighting libraries in that state that offer resources in these subject areas, including specific collections that may be of interest.  

The state of Colorado has a number of wonderful libraries that they can lay claim to.  I can attest that those featured in this article are among the best.  The article is available on the Internet at http://www.aallnet.org/chapter/coall/pubs/lrc/lrc1113.pdf.  
George