Information circulars. 7631. Mechanical mining in some bituminous-coal mines: Progress report 6, Extraction of pillars with mechanized equipment; by Wilbur A. Hater, Joseph J. Shields, Albert L. Toenges, and Louis A. Turnbull.
Publication Title:
Mechanical mining in some bituminous-coal mines: Progress report 6, Extraction of pillars with mechanized equipment; by Wilbur A. Hater, Joseph J. Shields, Albert L. Toenges, and Louis A. Turnbull.
Display Title:
Information circulars. 7631. Mechanical mining in some bituminous-coal mines: Progress report 6, Extraction of pillars with mechanized equipment; by Wilbur A. Hater, Joseph J. Shields, Albert L. Toenges, and Louis A. Turnbull.
Series Title:
Information circulars.
Corporate Agency Authors:
Mines Bureau and Interior Dept.
Sort Author:
Mines Bureau
Authors:
Hater, Wilbur A., Shields, Joseph J., Toenges, Albert L., and Turnbull, Louis A.
Date:
Apr. 1952
Publish Date ISO Format:
1952-04-01T00:00:00Z
Publication Start:
19520401
Publication End:
19520430
Corporate/Agency Author:
Mines Bureau
Publication month:
9
Publication year:
1952
SuDoc number:
I 28.27:(nos.)
Description:
[1]+iv+64 p. il. 44 pl. 4°
Notes:
[Processed.]
Notes:
[Processed.] † Distribution Made by Issuing Office. Mines Bureau, Pittsburgh, Pa.
Availability:
† Distribution Made by Issuing Office. Mines Bureau, Pittsburgh, Pa.