Subjects: mining (sorted by popularity)
- Emerald mines and mining -- Juvenile fiction 143 downloads
- Mines (Military explosives) -- Warfare 142 downloads
- Submarine mines -- Handbooks, manuals, etc. 140 downloads
- Silver mines and mining -- Colorado 132 downloads
- Gold miners -- Australia -- Ballarat (Vic.) -- Social conditions -- 19th century 131 downloads
- Gold mines and mining -- Australia -- Ballarat (Vic.) -- History -- 19th century 131 downloads
- Mineralogy, Determinative 127 downloads
- Mineral industries -- England -- History -- To 1500 127 downloads
- Mining claims -- Juvenile fiction 127 downloads
- Gold mines and mining -- Colorado -- Pikes Peak Region -- History -- 19th century 127 downloads
- Gold mines and mining -- Yukon -- Fiction 125 downloads
- Diamond mines and mining -- Guyana 125 downloads
- Gold mines and mining -- California -- Juvenile fiction 124 downloads
- Mines and mineral resources -- Nevada -- History 124 downloads
- Mineral industries -- Nevada -- History 124 downloads
- Coal mines and mining -- Pennsylvania -- Fiction 123 downloads
- Coal mines and mining -- Belgium -- Liège (Province) 122 downloads
- American Consolidated Mines Company 120 downloads
- Opal mines and mining -- Australia -- Fiction 120 downloads
- Mines and mineral resources -- New Mexico -- Taos County 120 downloads
- Mines and mineral resources -- Brazil 119 downloads
- Silver mines and mining -- Nevada -- History 119 downloads
- Mines and mineral resources -- Ontario 118 downloads
- Gold miners -- Canada, Western -- Fiction 117 downloads
- Coal miners -- Labor unions -- Great Britain -- History 114 downloads
