Synonyme wurden verwendet für:
Coal mines and mining
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keywords:("Coal mines and mining")
Extraction of stoops by shuttle cars and loaders
Betriebskosten und Selbstkosten der Zechenbahnen
Haulage accidents in coal mines
Aerial ropeway for transporting coal
The Tilmanstone aerial ropeway
The prevention of haulage accidents
A haulage system with gathering locomotives only
A haulage system with gathering locomotives only
Nomogram for synchronization of underground railroad transportation
Underground transportation in coal mines
Shuttle cars from face to intermediate Haulage
Inspection and correction of damage to railways caused by mining in Saar
Report on Haulage accident at Newcraighall Colliery
Mobile loading into shuttle cars increases
Trolley wire locomotive haulage
Trolley wire locomotive haulage
Use of trolleyphones speeds mainline haulage