Last edited by Misho
Friday, July 31, 2020 | History

2 edition of Performance of a novel bump control pillar extracting technique during room-and-pillar retreat coal mining found in the catalog.

Performance of a novel bump control pillar extracting technique during room-and-pillar retreat coal mining

A. A. Campoli

Performance of a novel bump control pillar extracting technique during room-and-pillar retreat coal mining

by A. A. Campoli

  • 184 Want to read
  • 38 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in Washington, D.C. (2401 E St., N.W., Washington 20241) .
Written in English

    Places:
  • West Virginia,
  • McDowell County.
    • Subjects:
    • Pillaring (Mining),
    • Coal mines and mining -- West Virginia -- McDowell County.

    • Edition Notes

      Bibliography: p. 38.

      Statementby Alan A. Campoli, David C. Oyler, and Frank E. Chase.
      SeriesReport of investigations ;, 9240, Report of investigations (United States. Bureau of Mines) ;, 9240.
      ContributionsOyler, David C., Chase, Frank E.
      Classifications
      LC ClassificationsTN23 .U43 no. 9240, TN292 .U43 no. 9240
      The Physical Object
      Paginationii, 40 p. :
      Number of Pages40
      ID Numbers
      Open LibraryOL2147959M
      LC Control Number88600453


Share this book
You might also like
ALLIED GROUP LTD.

ALLIED GROUP LTD.

subjective rating of motor vehicle noise

subjective rating of motor vehicle noise

Substantial justice on campus: individual rights v. institutional needs.

Substantial justice on campus: individual rights v. institutional needs.

Experimental and numerical investigation of losses in low-pressure turbine blade rows

Experimental and numerical investigation of losses in low-pressure turbine blade rows

Young Apollo

Young Apollo

INTRODUCTION TO ABORIGINAL STUDIES PART 1

INTRODUCTION TO ABORIGINAL STUDIES PART 1

Fauquier County, Virginia tombstone inscriptions

Fauquier County, Virginia tombstone inscriptions

Militerrorism

Militerrorism

Sports clothing & footwear.

Sports clothing & footwear.

light unto the nations

light unto the nations

In memoriam Hans Fürstenberg [died 3 Apr. 1982, aged 92].

In memoriam Hans Fürstenberg [died 3 Apr. 1982, aged 92].

Guide to teacher certification testing.

Guide to teacher certification testing.

Every square inch: the story of Canadian topographic mapping, by L. M. Sebert.

Every square inch: the story of Canadian topographic mapping, by L. M. Sebert.

Rising Standards in Scottish Primary Schools, 1953-63 (Scottish Council for Research in Education)

Rising Standards in Scottish Primary Schools, 1953-63 (Scottish Council for Research in Education)

Index of Headquarters USAF controlled reports as of 30 September 1978

Index of Headquarters USAF controlled reports as of 30 September 1978

Performance of a novel bump control pillar extracting technique during room-and-pillar retreat coal mining by A. A. Campoli Download PDF EPUB FB2