00890cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040004600111042001200157050002200169082001100191100004300202245014000245260002300385300006400408490003600472504003000508650001700538700003300555810004800588gs 52000268 DLC20260227111359.0821007s1952    dcuab    b   f000 0 eng c  ags 52000268   a(OCoLC)8840896  aU.S. Geol. Survey. Libr.cMsSMdMsSMdDLC  apremarc00aQE75b.C5 no. 186  a553.491 aMoore, Frank B.q(Frank Baker),d1912-10aPitchblende deposits at the Wood and Calhoun mines, Central City mining district, Gilpin County, Colo.,cby F.B. Moore and C.R. Bulter.  aWashington,c1952.  a8 p.bmaps (1 fold. in pocket) diagrs. (2 in pocket)c27cm.1 aGeological survey circularv186  a"References cited": p. 8. 0aPitchblende.1 aButler, C.R.,ejoint author.2 aGeological Survey (U.S.).tCircular ;v186.