Author : Pennsylvania State College. School of Mineral Industries
Publisher :
Page : 295 pages
File Size : 32,69 MB
Release : 1931
Category : Coal mines and mining
ISBN :
Author : Pennsylvania State College. Mineral Industries Extension Division
Publisher :
Page : pages
File Size : 42,84 MB
Release : 1934
Category : Coal mines and mining
ISBN :
Author : Coal Mine Management
Publisher :
Page : 644 pages
File Size : 12,3 MB
Release : 1926
Category : Coal mines and mining
ISBN :
Author : Pennsylvania. State College. Mineral Industries Extension Services
Publisher :
Page : pages
File Size : 41,92 MB
Release : 1938
Category : Coal mines and mining
ISBN :
Author :
Publisher :
Page : 398 pages
File Size : 20,2 MB
Release : 1931*
Category : Coal mines and mining
ISBN :
Author : Thomas Hansom Cockin
Publisher :
Page : 456 pages
File Size : 48,76 MB
Release : 1904
Category : Coal mines and mining
ISBN :
Author : W. G. Duncan
Publisher :
Page : 324 pages
File Size : 26,15 MB
Release : 193?
Category : Coal miners
ISBN :
Author : George L. Kerr
Publisher :
Page : 292 pages
File Size : 27,56 MB
Release : 1909
Category : Coal mines and mining
ISBN :
Author : Robert Peele
Publisher :
Page : 464 pages
File Size : 38,72 MB
Release : 1921
Category : Coal mines and mining
ISBN :
Author : Illinois. Board of Vocational Education and Rehabilitation
Publisher :
Page : 608 pages
File Size : 44,56 MB
Release : 1921
Category : Vocational education
ISBN :
