industry
Geological map of the mining district of Cornwall… (Thomas, 1819)
Section of the Bath Easton Coal Mine, Avon (Unknown, 1808?)
‘Gold mines, County of Wicklow’
Section of Stora Grufna coppermine, Sweden
Plan of Stora Grufna coppermine, Sweden
‘A sketch of a section of Wheal Unity Tin Mine in Devonshire’
Swanscombe Hill. Looking NNW
Fault in the coal workings of Cwm Sychan, Monmouthshire