Media type: E-Article Title: Die Mechanisierung des Ruhrbergbaus, 1890-1930 Contributor: Mernitz, Kenneth S.; Burghardt, Uwe Published: JSTOR, 1997 Published in: Technology and Culture, 38 (1997) 2, Seite 519 Language: Not determined DOI: 10.2307/3107147 ISSN: 0040-165X Keywords: Engineering (miscellaneous) ; History Origination: Footnote: