Karst Paleo-Collapses and Their Impacts on Mining and the Environment in Northern China

Gongyu Li, Xi’an Research Institute of China Coal Technology & Engineering Group Corp
Wanfang Zhou

The Sandstone Karst of Pine County, Minnesota

Beverley Lynn Shade, Austin, Texas
Emmit Calvin Alexander Jr., University of Minnesota
Scott C. Alexander, University of Minnesota

A Proposed Hypogenic Origin of Iron Ore Deposits in Southeast Minnesota Karst

E. Calvin Alexander Jr., University of Minnesota
Betty J. Wheeler, University of Minnesota

Down the Rabbit Hole: Identifying Physical Controls on Sinkhole Formation in the UK

Tamsin Green, University of Leeds

Relay Ramp Structures and Their Influence on Groundwater Flow in the Edwards and Trinity Aquifers, Hays and Travis Counties, Central Texas

Brian B. Hunt, Barton Springs Edwards Aquifer Conservation District
Brian A. Smith, Barton Springs Edwards Aquifer Conservation District
Alan Andrews, Barton Springs Edwards Aquifer Conservation District
Douglas Wierman
Alex S. Broun
Marcus Gary, Edwards Aquifer Authority

Goliath’s Cave, Minnesota: Epigenic Modification and Extension of Pre-Existing Hypogenic Conduits

E. Calvin Alexander Jr., University of Minnesota
Scott C. Alexander, University of Minnesota
Kelton Barr, Braun Intertec, Minneapolis, MN
Andrew Luhmann, University of Minnesota
Cale Anger, University of Minnesota