Subjects: mining (sorted by popularity)
- Mineral waters -- England 52 downloads
- British Museum (Natural History). Department of Mineralogy 50 downloads
- Miners -- Diseases 47 downloads
- Coal miners -- Diseases 47 downloads
- Submarine mines 47 downloads
- Miners' phthisis 47 downloads
- Diamond mines and mining -- South Africa -- Kimberley -- Fiction 47 downloads
- Coal mine accidents -- Drama 46 downloads
- Coal miners -- Drama 46 downloads
- Coal miners -- Family relationships -- Drama 46 downloads
- Mining machinery -- History 45 downloads
- Miners -- Poetry 45 downloads
- Mine pumps -- History 45 downloads
- Diamond mines and mining -- Brazil 45 downloads
- Gold mines and mining -- California 44 downloads
- Mines (Military explosives) -- Warfare 44 downloads
- Mines and mineral resources -- Arizona 41 downloads
- Copper mines and mining -- Fiction 41 downloads
- Mines and mineral resources in art 40 downloads
- Miners in art 40 downloads
- Coal mines and mining -- Belgium -- Liège (Province) 39 downloads
- Mines and mineral resources -- Laos 37 downloads
- Mine hoisting 37 downloads
- Mines and mineral resources -- Thailand 37 downloads
- Copper mines and mining -- Michigan -- Upper Peninsula -- History 34 downloads