Report of investigations. 7687. Comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coal; by Robert L. Schmidt, W. H. Engelmann, and R. R. Fumanti.
Publication Title:
Comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coal; by Robert L. Schmidt, W. H. Engelmann, and R. R. Fumanti.
Display Title:
Report of investigations. 7687. Comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coal; by Robert L. Schmidt, W. H. Engelmann, and R. R. Fumanti.
Series Title:
Report of investigations.
Corporate Agency Authors:
Mines Bureau and Interior Dept.
Sort Author:
Mines Bureau
Authors:
Schmidt, Robert L., Engelmann, W. H., and Fumanti, R. R.
Author place:
Washington, DC
Author zip:
20240
Date:
[1972.]
Publish Date ISO Format:
1972-01-01T00:00:00Z
Publication Start:
19720101
Publication End:
19721231
Corporate/Agency Author:
Mines Bureau
Publication month:
13
Publication year:
1972
SuDoc number:
I 28.23:(nos.)
Description:
[2]+ii+18 p. il. 4°
Notes:
† Distribution Made by Issuing Office. Mines Bureau, Pittsburgh, PA 15213 • Sent to Depository Libraries. Item 637-A
Availability:
† Distribution Made by Issuing Office. Mines Bureau, Pittsburgh, PA 15213 • Sent to Depository Libraries. Item 637-A