Subjects: mining
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- Gold mines and mining -- Alaska 1419 downloads
- Gold mines and mining -- Australia 1376 downloads
- Mining engineers -- Fiction 1366 downloads
- Gold mines and mining -- Ghana 1272 downloads
- Mines and mineral resources -- Texas -- Folklore 1229 downloads
- Gold miners -- Juvenile fiction 1224 downloads
- Mining engineering 1193 downloads
- Silver mines and mining -- Juvenile fiction 1103 downloads
- Gold mines and mining -- Yukon River Valley (Yukon and Alaska) -- Fiction 960 downloads
- Minerals -- United States 947 downloads
- Gold mines and mining -- Brazil 921 downloads
- Mineral industries -- England -- History -- To 1500 913 downloads
- Coal mines and mining -- United States -- Fiction 876 downloads
- Coal miners -- United States -- Fiction 876 downloads
- Mines and mineral resources -- Nevada -- History 857 downloads
- Mineral industries -- Nevada -- History 857 downloads
- Mineralogy 851 downloads
- Mineralogy -- Illinois 801 downloads
- Mining camps -- Fiction 775 downloads
- Abandoned mines -- Juvenile fiction 770 downloads
- Mines and mineral resources -- Colorado -- Fiction 768 downloads
- Coal mines and mining 760 downloads
- Diamond mines and mining -- Juvenile fiction 748 downloads
- Submarine mines 737 downloads
- Mineralogy -- Missouri 725 downloads