01291nam a2200265Ia 4500001000700000003000500007005001700012008004100029010002000070043001200090050002200102082001700124086001800141245038600159260003500545300003400580490004900614504004100663650006300704650005600767650006000823650005900883700003100942700005200973192241BIBL20160527191943.0931202s1994    dcuab    b   f000 0 eng    a 93048416 //r94  an-us-co00aQE92.F7bG85 199400a557.88/62200 aI 19.4/2:109700aGuidebook on the geology, history, and surface-water contamination and remediation in the area from Denver to Idaho Springs, Coloradocedited by K.C. Stewart and R.C. Severson ; written contributions by Walter H. Ficklin ... [et al.] ; photographic contributions by John M. Epperson ... [et al.] ; graphics by Michael F. Duncan ... [et al.] ; editorial assistance by Thomas Kohnen.  aWashingtonbU.S. G.P.O.c1994.  aiv, 55 p.bill., mapsc28 cm. 0aU.S. Geological Survey circularv10972Local  aIncludes bibliographical references. 0aEnvironmental geologyzFront Range (Colo. and Wyo.)2Local 0aAcid mine drainagezColoradozDenver Region.2Local 0aAcid mine drainagezFront Range (Colo. and Wyo.)2Local 0aEnvironmental geologyzColoradozDenver Region.2Local10aStewart, Kenneth C.2Local10aSeverson, R. C.q(Ronald Charles)d1945-2Local