South Dakota

Wind Cave National Park Buffalo jump at Wind Cave National Park

In 2011, the Fund worked with the National Park Service to add more than 5,500 acres to Wind Cave National Park in South Dakota. Considered a sacred place by the Lakota, Wind Cave is one of the longest and most… Read More


Clint Miller
Clint Miller Pine Island, MN
(507) 356-6301

Clint Miller is our Upper Midwest Field Representative, working across the Dakotas, Nebraska, Missouri, Minnesota and Wisconsin. Based in southern Minnesota, Clint has worked in conservation for roughly 25 years. Outside the office, he volunteers as a firefighter/EMT and gets outdoors to hike, run, hunt, and kayak whenever he can.

Tom Duffus
Tom Duffus Duluth, MN
(218) 722-2393

As vice president of the Midwest region, Tom Duffus leads land conservation partnerships in the Upper Great Lakes and Upper Mississippi River/Missouri River watershed.  During the summer, he’s often found sailing on Lake Superior. He has a Master of Forest Science degree from Yale University and a B.S. in Environmental Studies/Geology from St. Lawrence University.