Strikes and lockouts -- Coal mining -- Germany -- Ruhr (Region)See also what's at your library, or elsewhere.
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Filed under: Strikes and lockouts -- Coal mining -- Germany -- Ruhr (Region)
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Filed under: Germany -- Ruhr (Region)
Filed under: Agriculture -- Germany -- Ruhr (Region)Filed under: Coal -- Germany -- Ruhr (Region)
Filed under: Coke -- Germany -- Ruhr (Region)Filed under: Coal -- Transportation -- Germany -- Ruhr (Region)Filed under: Coal miners -- Germany -- Ruhr (Region)
Filed under: Coal miners' strike -- Germany -- Ruhr (Region) -- 1905Filed under: Coal mines and mining -- Germany -- Ruhr (Region)- Design and operation of the coal planer, Ruhr District, Germany (U.S. Dept. of the Interior, Bureau of Mines, 1946), by John W. Buch and United States Bureau of Mines (page images at HathiTrust)
- Pott-Broche coal-extraction process and plant of Ruhr©·ol G. m. b. H., Bottrop-Welheim, Germany (U.S. Dept. of the Interior, Bureau of Mines, 1947), by H. H. Lowry, H. J. Rose, and United States Bureau of Mines (page images at HathiTrust)
- Labour and production in the Ruhr coal field, 1918 to 1920. ([Impression "Sadag"], 1921), by International Labour Office (page images at HathiTrust; US access only)
Filed under: German language -- Dialects -- Germany -- Ruhr (Region)Filed under: Industries -- Germany -- Ruhr (Region)
Filed under: Polish people -- Germany -- Ruhr (Region) -- HistoryFiled under: Railroads -- Germany -- Ruhr (Region)
Filed under: Steel industry and trade -- Germany -- Ruhr (Region) -- History
Filed under: Working class -- Germany -- Ruhr (Region) -- History -- 20th century |