01969cam a22003731i 4500 gs 09000198 DLC 20260227111309.0 790420s1909 dcuabf f001 0 eng gs 09000198 (OCoLC)4879555 DLC ICharE OCoLC DLC n-us--- QE75 .B9 no. 394 TN23 .U75 1909 Copy 2. Geological Survey (U.S.) Papers on the conservation of mineral resources / reprinted from Report of the National Conservation Commission, February, 1909. Washington : Govt. Print. Off., 1909. 214 p. : xii pl. (part. fold., incl. maps) diagrs. ; 24 cm. Bulletin 394 Contents.- Coal fields of the United States, by M.R. Campbell and E.W. Parker.- Estimates of future coal production, by H. Gannett.- The petroleum resources of the United States, by D.T. Day.- Natural-gas resources of the United States, by D.T. Day.- Peat resources of the United States, exclusive of Alaska, by C.A. Davis.- Iron ores of the United States, by C.W. Hayes.- Resources of the United States in gold, silver, copper, lead, and zinc, by W. Lindgren.- The phosphate deposits of the United States, by F.B. Van Horn.- Mineral resources of Alaska, by A.H. Brooks. Includes index. Mines and mineral resources United States. Campbell, Marius R. (Marius Robinson), 1858-1940. Parker, Edward W. (Edward Wheeler), 1860- Gannett, Henry, 1846-1914. Day, David T. (David Talbot), 1859-1925. Davis, Charles Albert, 1861-1916. Hayes, C. W. (Charles Willard), 1859-1916. Lindgren, Waldemar, 1860-1939. Van Horn, Frank Benjamin, 1877- Brooks, Alfred H. (Alfred Hulse), 1871-1924. Geological Survey (U.S.). Bulletin ; 394. 24833 24833