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Investigative Methods for Controlling Groundwater Flow to Underground Mine Workings

Contents

Introduction

Groundwater Flow to Underground Mine Workings

Mitigation Methods

Methods for Investigating Groundwater Source Areas

• Hydrological and Geohydrological Methods
• Water Balance
• Age Dating of Springs
• Tracer Tests
• Water Quality
• Drilling
• Soils and Vegetation Methods
• Remote Sensing, Photo Interpretation, and Field Mapping
• Field Investigations for Soil and Vegetative Mapping
• Geoscientific Methods
• Literature Review
• Aerial Photography in Relation to Fracture and Structural Studies
• Field Mapping
• Geophysics

Case Studies

• Elkhorn Mine and Mining District
• Introduction
• History
• Geology
• Environmental Conditions
• Underground Workings
• Mine Discharges
• Surface Water
• Regional Structure (Aerial Photographs)
• Characterization and Mapping of Riparian Areas and Wetlands
• Office Procedures
• Field Investigations
• Mapping Results
• Discharge and Recharge Areas
• Water Samples
• Charter Oak Mine Site
• Introduction
• History
• Geology
• Environmental Conditions
• Underground Workings
• Mine Discharges
• Surface Water
• Aerial Photography
• Characterization and Mapping of Riparian Areas and Wetlands

Summary

• Elkhorn Mine
• Charter Oak Mine

References

• Hydrology
• Soil and Wetlands Interpretation
• Aerial Photointerpretation
• Elkhorn Mine
• Charter Oak Mine

Appendix A—Elkhorn Mine Riparian and Wetlands Characterization and Mapping

• Methods
• Discharge and Recharge Areas
• Water Samples

Appendix B—Elkhorn Mine Riparian Area and Wetlands Map Unit Descriptions

• Map Unit 1F
• Map Unit 2F
• Map Unit 1H
• Map Unit 2H
• Map Unit 1FH
• Map Unit 3U
• Map Unit W

About the Authors

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