Information circulars. 8424. Specifications for selected hydraulic-powered roof supports, with method to estimate support requirements for longwalls [with bibliography]; by A. J. Barry, O. B. Nair, and J. S. Miller.
Publication Title:
Specifications for selected hydraulic-powered roof supports, with method to estimate support requirements for longwalls [with bibliography]; by A. J. Barry, O. B. Nair, and J. S. Miller.
Display Title:
Information circulars. 8424. Specifications for selected hydraulic-powered roof supports, with method to estimate support requirements for longwalls [with bibliography]; by A. J. Barry, O. B. Nair, and J. S. Miller.
Series Title:
Information circulars.
Corporate Agency Authors:
Mines Bureau and Interior Dept.
Sort Author:
Mines Bureau
Authors:
Barry, A. J., Nair, O. B., and Miller, J. S.
Author place:
Washington, DC
Author zip:
20240
Date:
[Sept. 1969.]
Publish Date ISO Format:
1969-09-01T00:00:00Z
Publication Start:
19690901
Publication End:
19690930
Corporate/Agency Author:
Mines Bureau
Publication month:
4
Publication year:
1969
SuDoc number:
I 28.27:(nos.)
Description:
[3]+15 p. il. 4°
Notes:
• Sent to Depository Libraries. Item 637-A
Availability:
† Distribution Made by Issuing Office. Mines Bureau, Pittsburgh, PA 15213 and • Sent to Depository Libraries. Item 637-A