Subjects: mining
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- Gold mines and mining -- Yukon River Valley (Yukon and Alaska) -- Fiction 1745 downloads
- Mineral industries -- Finance 1719 downloads
- Great Britain. Army. Royal Sappers and Miners 1640 downloads
- Gold mines and mining -- Ghana 1615 downloads
- Mineralogy -- Texas 1564 downloads
- Mining engineering 1467 downloads
- Minerals -- United States 1439 downloads
- Silver mines and mining -- Juvenile fiction 1386 downloads
- Diamond mines and mining -- Juvenile fiction 1320 downloads
- Gold mines and mining -- Brazil 1302 downloads
- Submarine mines 1227 downloads
- Copper mines and mining -- Juvenile fiction 1214 downloads
- Mineralogy 1185 downloads
- Mines and mineral resources -- Colorado -- Fiction 1155 downloads
- Coal mines and mining -- United States -- Fiction 1091 downloads
- Coal miners -- United States -- Fiction 1091 downloads
- Gold mines and mining -- British Columbia 1083 downloads
- Mining camps -- Fiction 1073 downloads
- Abandoned mines -- Juvenile fiction 1063 downloads
- Coal mines and mining 1046 downloads
- Mines and mineral resources -- Texas -- Folklore 1034 downloads
- Diamond mines and mining -- South Africa 938 downloads
- United Mine Workers of America -- History 930 downloads
- Coal miners -- Pennsylvania 929 downloads
- Diamond mines and mining -- South Africa -- Fiction 926 downloads