| Reference | {Deposit:: Spurr, J.E., 1898, Geology of the Yukon gold district, Alaska, with an introductory chapter on the history and conditions of the district to 1897 by H.B. Goodrich: U.S. Geological Survey 18th Annual Report, Part 3, p. 87-392.}{Deposit:: Brooks, A.H., 1904, Placer mining in Alaska in 1903: U.S. Geological Survey Bulletin 225, p. 43-59.}{Deposit:: Prindle, L.M., 1905, The gold placers of the Fortymile, Birch Creek, and Fairbanks regions, Alaska: U.S. Geological Survey Bulletin 251, 89 p.}{Deposit:: Purington, C.W., 1905, Methods and costs of gravel and placer mining in Alaska: U.S. Geological Survey Bulletin 263, 273 p.}{Deposit:: Brooks, A.H., 1907, The Alaskan mining industry in 1906: U.S. Geological Survey Bulletin 314, p. 19-39.}{Deposit:: Ellsworth, C.E., 1910, Placer mining in the Yukon-Tanana region: U.S. Geological Survey Bulletin 442, 432 p.}{Deposit:: Ellsworth, C.E., and Parker, G.L., 1911, Placer mining in the Yukon-Tanana region: U.S. Geological Survey Bulletin 480, 325 p.}{Deposit:: Brooks, A.H., 1915, Mineral resources of Alaska in 1914: U.S. Geological Survey Bulletin 622, 238 p.}{Deposit:: Martin, G.C., 1919, Alaska Mining Industry in 1917: U.S. Geological Survey Bulletin 692, p. 11-42}{Deposit:: Mertie, J.B., Jr., 1932, Mining in the Circle district: U.S. Geological Survey Bulletin 824, p. 155-172.}{Deposit:: Smith, P.S., 1932, Mineral industry of Alaska in 1929, in Smith, P.S., and others Mineral resources of Alaska, report on progress of investigations in 1929: U.S. Geological Survey Bulletin 824-A, p. 1-81.}{Deposit:: Smith, P.S., 1933, Mineral industry of Alaska in 1930: U.S. Geological Survey Bulletin 836, p. 1-83.}{Deposit:: Smith, P.S., 1933, Mineral industry in Alaska in 1931: U.S. Geological Survey Bulletin 844-A, p. 1-82.}{Deposit:: Smith, P.S., 1934, Mineral industry of Alaska in 1932: U.S. Geological Survey Bulletin 857-A, p. 1-91.}{Deposit:: Smith, P.S., 1934, Mineral industry of Alaska in 1933: U.S. Geological Survey Bulletin 864-A, p. 1-94.}{Deposit:: Smith, P.S., 1936, Mineral industry in Alaska in 1934: U.S. Geological Survey Bulletin 868-A, p. 1-91.}{Deposit:: Smith, P.S., 1937, Mineral industry in Alaska in 1935: U.S. Geological Survey Bulletin 880-A, p. 1-95.}{Deposit:: Smith, P.S., 1938, Mineral industry of Alaska in 1936: U.S. Geological Survey Bulletin 897-A, p. 1-107.}{Deposit:: Smith, P.S. 1939, Mineral industry in Alaska in 1937: U.S. Geological Survey Bulletin 910-A, p. 1-113.}{Deposit:: Burand, W.M., 1965, A geochemical investigation between Chatanika and Circle hot springs, Alaska: Alaska Division of Mines and Minerals Geochemical Report 5, 11 p.}{Deposit:: Cobb, E.H., 1972, Metallic mineral resources map of the Circle quadrangle, Alaska: U.S. Geological Survey Misc. Field Studies Map MF-391, 1 sheet, scale 1:250,000.}{Deposit:: Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-633, 72 p.}{Deposit:: Menzie, W.D., Foster, H.L., Tripp, R.B., and Yeend, W.E., 1983, Mineral resource assessment of the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-170-B, 61 p., 1 sheet, 1:250,000.}{Deposit:: Wilkinson, Fred, 1984, Excavating frozen muck, in Sixth Annual Conference on Alaskan Placer Mining: Fairbanks, University of Alaska Mineral Industry Research Laboratory Report 69, p. 20-22.}{Deposit:: Freeman, C.J., Adams, D.D., Balla, J.C., and Metz, P.A., 1988, Circle joint venture 1988 final report: Fairbanks, Alaska, Fairbanks Exploration Inc. 23 p.}{Deposit:: Wiltse, M.A., Reger, R.D., Newberry, R.J, Pessel, G.H., Pinney, D.S., Robinson, M.S., and Solie, D.N., 1995, Bedrock geologic map of the Circle mining district, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 95-02b, 1 sheet, scale 1:63,360.} |