karst geology
-

First Test of 2013 MN Frac Sand Law is Successful
By Johanna Rupprecht, Land Stewardship Project The owner of a controversial Houston County silica sand mine was notified Monday by the Minnesota Department of Natural Resources (DNR) that he must stop mining…
-

Sand, Land & Land Stewardship
By Johanna Rupprecht, Land Stewardship Project For longer than I can remember, my family has taken the same route from our farm in southeast Minnesota to visit my grandparents in north-central Wisconsin.…