Colorado Department of Natural Resources
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Coal Mine Subsidence and Land Use in the Boulder-Weld Coalfield
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Six plates and text describing basic subsidence-related problems, practical approaches to land development, and extent of mining. Plates: 1) extent of mining, 2) depth of cover, 3) mine pillars, 4) probable thickness of extracted coal, 5) subsidence inventory, 6) subsidence hazards. 92 pages. 32 figures. 6 plates (1:24,000).
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Amuedo and Ivey, Inc.
Subsidence Investigation, Tri-Towns Weld County, Colorado
© Colorado Geological Survey