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The Hagley Digital Archives provides online access to selected items from the Hagley Library's collection of images, documents, and publications related to the history of business, technology, and society.
How the Cone Works
Pure Coal is lighter--slate and bone are heavier than the agitated mixture of sand and water in the cone. The coal floats and is washed over the lip of the cone. Impurities sink and are trapped out through the bottom.
Philadelphia and Reading Coal and Iron Company photographs (Accession 1980.318)
Philadelphia and Reading Coal and Iron Company
[Description and dates], Hagley ID, Box/folder number, Philadelphia and Reading Coal and Iron Company photographs (Accession 1980.318), Audiovisual Collections and Digital Initiatives Department, Hagley Museum and Library, Wilmington, DE 19807
Audiovisual Collections and Digital Initiatives Department, Hagley Museum and Library
1 photographic print : b&w ; 8 x 10 in.
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Titles and descriptions used here created by the company in the 1930s.
Coal mines and miningCoal--CleaningCoal preparation plants