Patent wedge for coal, mkd. IV-99

Patent wedge for coal, mkd. IV-99 Patent wedge for coal, mkd. IV-99

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Patent wedge for coal, mkd. IV-99
Science Museum Group
© The Board of Trustees of the Science Museum

Patent wedge for coal, mkd. IV-99
Science Museum Group
© The Board of Trustees of the Science Museum

Patent wedge for coal, mkd. IV-99

Details

Category:
Mining & Ore Dressing
Object Number:
1964-418
type:
wedge
credit:
Royal School of Mines