Report of investigations. 7512. Multiple zone mining plus beneficiation of western phosphate rock, cost estimate and comparison with selective mining; by Richard N. Spencer.
Publication Title:
Multiple zone mining plus beneficiation of western phosphate rock, cost estimate and comparison with selective mining; by Richard N. Spencer.
Display Title:
Report of investigations. 7512. Multiple zone mining plus beneficiation of western phosphate rock, cost estimate and comparison with selective mining; by Richard N. Spencer.
Series Title:
Report of investigations.
Corporate Agency Authors:
Mines Bureau and Interior Dept.
Sort Author:
Mines Bureau
Authors:
Spencer, Richard N.
Author place:
Washington, DC
Author zip:
20240
Date:
[May 1971.]
Publish Date ISO Format:
1971-05-01T00:00:00Z
Publication Start:
19710501
Publication End:
19710531
Corporate/Agency Author:
Mines Bureau
Publication month:
8
Publication year:
1971
SuDoc number:
I 28.23:(nos.)
Description:
[3]+18 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