Title
Sinking an exploratory bore hole using shearlegs
Caption
Sinking an exploratory bore hole using shearlegs, and a lever to work the borer. From "The Popular Encyclopaedia" (London, 1862). Engraving. Mining. Metal. Boring.
Date
1862
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP07112_009909P
License type
Rights managed
Available size
22,5Mb (2,2Mb) / 11,8in x 7,4in / 3543 x 2216 (300dpi)