On the dressing of ores : methods and machines of the 1870s /
Darlington, John.
Hunt, Robert,1807-1887.
Pulborough : Dragonwheel Books,
2002.
"First published in Volume 2 of 'Ure's dictionary of arts, manufactures, and mines' ... edited by Robert Hunt ... Seventh ed. published by Longmans, Green & Co., London, 1878." - [verso]
Ore-dressing