Methods and costs of gravel and placer mining in Alaska / by Chester Wells Purington.

By: Material type: TextTextSeries: Geological Survey (U.S.). Bulletin ; no. 263.Publication details: Washington, Govt. Print. Off., 1905.Description: 273, vii p. : ill., xlii pl. (2 fold. incl. map) diagrs. ; 24 cmSubject(s): LOC classification:
  • QE75 .B9 no. 263
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Subject series: A, Economic geology, 55.

"Notes on dredging, by J. P. Hutchins": p. 173-190.

Bibliography: p. 261-262.

Includes index.

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