![](http://www.alamy.com/thumbs/6/E4DCB57A-876E-43DF-9E59-633EA5EAAB0C/HBX3NP.jpg)
Image taken from page 239 of 'A Text-book of Ore and Stone Mining ... With frontispiece and 716 illustrations' Image taken from page 239 of 'A Text-book of Ore
Size: 1929px × 1295px
Photo credit: © Classic Collection / Alamy / Afripics
License: Licensed
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