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4 Reports of Investigation DIAMOND DRILL BITS IN MINING 1951-56 Coring Bit Crown

4 Reports of Investigation DIAMOND DRILL BITS IN MINING 1951-56 Coring Bit Crown

$ 7.89

Availability: 60 in stock
  • Condition: Used

    Description

    Offered here for 1 price are 4 Reports of Investigation from the Bureau of Mines:
    DIAMOND ORIENTATION IN DIAMOND BITS Procedures and Preliminary Results by Albert E. Long. DC: Bureau of Mines RI 4800, June 1951. 10 1/2" X 8", 16 pages text with 9 pages of b&w photos; wrappers. 3 hole punched else very good and complete. Not ex-library. Nicely illustrated study of diamond drill bits.
    DIAMOND ORIENTATION IN DIAMOND BITS A Method of Identifying Hard Vectors for Setting Purposes by Albert E. Long & C.B. Slawson. DC:
    Bureau of Mines RI 4853, February 1952. 10 1/2" X 8", 6 pages of text with 11 figures; 11 plates illustrating crystal model patterns; self wrappers. 3 hole punched else very good and complete. Not ex-library. A nicely illustrated study continuing from the previous publication listed above.
    DIAMOND ORIENTATION IN DIAMOND BITS 3. Effects of Orienting High-Grade DRILL BORT IN DIAMOND-CORING BIT CROWNS by Albert E. Long. DC:
    Bureau of Mines RI 5015, January 1954. 10 1/2" X 8", 13 pages of text with 5 pages of figures; 15 tables; self wrappers. 3 hole punched else very good and complete. Not ex-library. This is the third and final work in the diamond drill bit series.
    DIAMOND-BIT PERFORMANCE IN SCHIST by Donald M. Hausen & Albert E. Long. DC:
    Bureau of Mines RI 5291, December 1956. 10 1/2" X 8", 14 pages of text with 12 illus; 3 tables; self wrappers, 3 hole punched else good and complete. Not ex-library.
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