#coal-mining
Documents
Zusammenfassender Bericht über die Tätigkeit des Ständigen Ausschusses für die Betriebssicherheit im Steinkohlenbergbau für die Jahre 1961-1965
Documents
Provisions relating to the health benefits of retired coal miners : hearing before the Committee on Ways and Means, House of Representatives, One Hundred Third Congress, first session, September 9, 1993
Documents
Report on the working party on "Winding ropes and shaft guides" on the electro-magnetic examination of winding ropes
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