NEW MEXICO STATE BUREAU OF MINES AND MINERAL RESOURCES Don H. Baker, Jr., Director Frank E. Kottlowski...Geologist Plus more than z8 undergraduate assistants New Mexico Tech Staff Advisors GALE BILLINGS, Geoscience...Ore Deposits of Sierra County, New Mexico by GEORGE TOWNSEND HARLEY 1934 New Mexico State Bureau of...of Mines and Mineral Resources New Mexico State Bureau of Mines and Mineral Resources Don H. Baker, Jr...Jr., Director A Division of New Mexico Institute of Mining and Technology Stirling A. Colgate, President |