Synonyms were used for: Kohle
Search without synonyms: keywords:(Kohle)

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    Stripping employed to start recovery of 20,000 tons per acre

    Edwards, J.H. | Engineering Index Backfile | 1945
    Keywords: Coal mines and mining

    Efficient truck mine

    Edwards, J.H. | Engineering Index Backfile | 1948
    Keywords: Coal mines and mining