Information circulars. 7633. Economic benefits of systematic roof bolting in Zeigler no. 3 mine. Bell & Zollor Coal & Mining Co., Williamson County, Ill.; by L. W. Kelly.
Publication Title:
Economic benefits of systematic roof bolting in Zeigler no. 3 mine. Bell & Zollor Coal & Mining Co., Williamson County, Ill.; by L. W. Kelly.
Display Title:
Information circulars. 7633. Economic benefits of systematic roof bolting in Zeigler no. 3 mine. Bell & Zollor Coal & Mining Co., Williamson County, Ill.; by L. W. Kelly.
Series Title:
Information circulars.
Corporate Agency Authors:
Mines Bureau and Interior Dept.
Sort Author:
Mines Bureau
Authors:
Kelly, L. W.
Date:
May 1952
Publish Date ISO Format:
1952-05-01T00:00:00Z
Publication Start:
19520501
Publication End:
19520531
Corporate/Agency Author:
Mines Bureau
Publication month:
8
Publication year:
1952
SuDoc number:
I 28.27:(nos.)
Description:
[3]+9 p. 10 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.