Coal mines. Multiple-shift mechanical mining in some bituminous-coal mines, progress report 4, Extraction of pillars with mechanized equipment; by Albert L. Toenges, Earl R. Maize, and Frank A. Jones.
Publication Title:
Coal mines. Multiple-shift mechanical mining in some bituminous-coal mines, progress report 4, Extraction of pillars with mechanized equipment; by Albert L. Toenges, Earl R. Maize, and Frank A. Jones.
Display Title:
Coal mines. Multiple-shift mechanical mining in some bituminous-coal mines, progress report 4, Extraction of pillars with mechanized equipment; by Albert L. Toenges, Earl R. Maize, and Frank A. Jones.
Corporate Agency Authors:
Mines Bureau and Interior Department
Sort Author:
Mines Bureau
Authors:
Toenges, Albert L., Maize, Earl R., and Jones, Frank A.
Date:
Dec. 1942
Publish Date ISO Format:
1942-12-01T00:00:00Z
Publication Start:
19421201
Publication End:
19421231
Corporate/Agency Author:
Mines Bureau
Publication month:
1
Publication year:
1942
SuDoc number:
I 28.27:7223
Description:
[1]+59 p. 19 pl. 4°
Notes:
(Information circular, I. C. 7223.) [Processed.]
Notes:
(Information circular, I. C. 7223.) [Processed.] † Distribution Made by Issuing Office.