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Weniger Treffer
Art der Quelle
Thema
- mines and mineral resources 9 Treffer
- manganese ores 8 Treffer
- ore-dressing. 7 Treffer
- lead mines and mining 5 Treffer
- silver mines and mining 5 Treffer
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45 weitere Werte:
- uranium mines and mining 5 Treffer
- coal 4 Treffer
- zinc mines and mining 4 Treffer
- coal mines and mining 3 Treffer
- iron ores 3 Treffer
- mine examination 3 Treffer
- vanadium ores 3 Treffer
- coke. 2 Treffer
- gold mines and mining 2 Treffer
- lead mines and mining. 2 Treffer
- mine safety. 2 Treffer
- mines and mineral resources. 2 Treffer
- mining engineering 2 Treffer
- tungsten ores 2 Treffer
- uranium ores 2 Treffer
- alunite 1 Treffer
- beryllium 1 Treffer
- beryllium ores 1 Treffer
- beryllium. 1 Treffer
- blasting 1 Treffer
- boring 1 Treffer
- borings 1 Treffer
- clay 1 Treffer
- coal mine accidents 1 Treffer
- copper mines and mining 1 Treffer
- fluorspar 1 Treffer
- lead 1 Treffer
- lead poisoning. 1 Treffer
- metals 1 Treffer
- mine gases 1 Treffer
- mine gases. 1 Treffer
- mine safety 1 Treffer
- mining engineering. 1 Treffer
- oil-shales 1 Treffer
- oil-shales. 1 Treffer
- ores 1 Treffer
- petroleum 1 Treffer
- shaft sinking 1 Treffer
- shale 1 Treffer
- smelting. 1 Treffer
- sodium sulfate. 1 Treffer
- sulfur industry 1 Treffer
- tellurium. 1 Treffer
- volcanic ash, tuff, etc. 1 Treffer
- zinc mines and mining. 1 Treffer