Subject
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Tradition
1
Transportation
3
Trapping
2
Underground mining
3
Uranium
9
Uranium industry
1
Uranium ores
8
Urban planning
3
Valuation
1
Vegetation
1
Waste disposal
7
Waste management
1
Water
3
Water Supply
1
Water infusion
1
Water management
2
Water pollution
1
Water quality
1
Water resources
1
Weathering
1
Wilderness areas
2
Wildlife
3
Winter
1
Workers
1
Zinc
2
Zinc ores
2
zinc deposits
1