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GB157461A
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Flushing apparatus for excavating and conveying clay or similar material
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GB157455A
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Improved means for the hydraulic conveyance of refuse from mines
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GB157460A
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Improvements relating to the dumping of waste sand and gravel obtained in brown coal open workings
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GB157462A
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Flushing hopper for shallow and deep dredgers
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GB157459A
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Improved apparatus for excavating by jetting
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GB155269A
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Plant for separating coke from waste fuel and residues
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DE329114C
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Washing device for the extraction of coke from waste and residues
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DE321881C
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Railway car with facility for unloading by water flushing
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DE318855C
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Hydropower elevator
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DE324139C
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Mobile spray device for the extraction of masses for flushing in mining
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DE415294C
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Drive drum for link conveyor belts
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