Information circular, I. C. (series). 7527. Mechanical mining in some bituminous coal mines: Progress report 15, Extraction of pillars with mechanized equipment; by Louis A. Turnbull and Albert L. Toenges.
Publication Title:
Mechanical mining in some bituminous coal mines: Progress report 15, Extraction of pillars with mechanized equipment; by Louis A. Turnbull and Albert L. Toenges.
Display Title:
Information circular, I. C. (series). 7527. Mechanical mining in some bituminous coal mines: Progress report 15, Extraction of pillars with mechanized equipment; by Louis A. Turnbull and Albert L. Toenges.
Series Title:
Information circular, I. C. (series).
Corporate Agency Authors:
Mines Bureau and Interior Dept.
Sort Author:
Mines Bureau
Authors:
Turnbull, Louis A. and Toenges, Albert L.
Date:
July 1949
Publish Date ISO Format:
1949-07-01T00:00:00Z
Publication Start:
19490701
Publication End:
19490731
Corporate/Agency Author:
Mines Bureau
Publication month:
6
Publication year:
1949
SuDoc number:
I 28.27:(no.)
Description:
cover title, 59 p. 23 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.