Last edited by Arashilmaran
Thursday, May 7, 2020 | History

2 edition of Longer-than-seam-height drill development program found in the catalog.

Longer-than-seam-height drill development program

G. K. Derby

Longer-than-seam-height drill development program

by G. K. Derby

  • 321 Want to read
  • 16 Currently reading

Published by Dept. of the Interior, Bureau of Mines in [Washington] .
Written in English

    Subjects:
  • Boring.,
  • Mine roof bolting.

  • Edition Notes

    Statementby G. K. Derby and J. E. Bevan.
    SeriesReport of investigations - Bureau of Mines ; 8273, Report of investigations (United States. Bureau of Mines) -- 8273.
    ContributionsBevan, J. E., United States. Bureau of Mines.
    The Physical Object
    Pagination[3], 16 p. :
    Number of Pages16
    ID Numbers
    Open LibraryOL15221035M


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Longer-than-seam-height drill development program by G. K. Derby Download PDF EPUB FB2

Longer-than-seam-height drill development program. [Washington]: Dept. of the Interior, Bureau of Mines, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: G K Derby; J E Bevan; United States.

Bureau of Mines. Open Library is an initiative of the Internet Archive, a (c)(3) non-profit, building a digital library of Internet sites and other cultural artifacts in digital projects include the Wayback Machine, and Longer-than-seam-height drill development program / ([Washington, D.C.]: Dept.

of the Interior, Bureau of Mines, []), by G. Derby and John E. Bevan (page images at HathiTrust) Diamond drill and auger sampling of vanadiferous shale, Mercu Dome mine, Tooele County, Utah / ([Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.

An Inclusive History of Sociology. Longer-than-seam-height drill development program. Report of investigations, consideration for inclusion into other ongoing development projects in.

@article{osti_, title = {Development of a system for high-speed drilling of small-diameter roofbolt holes.

Final technical report as of June }, author = {O'Hanlon, T A and Madonna, P L}, abstractNote = {Flow Industries conducted an evaluation of the feasibility of using high-pressure waterjets to drill the small-diameter holes needed for installing resin-grouted roofbolts.

Contract number DE-ACET provided for the continued testing of a flexible roof drill system which allows the operator to drill roof bolt holes longer than seam height. Full text of "Monthly catalog of United States government publications" See other formats.