waterwelljournal.com 24 n July 2022 WWJ
Bergerson-Caswell Inc. sets 8-inch casing for the first Darcy heat exchange well to 195 feet in September 2020 with the Pipefitters &
Steamfitters Union Hall in St. Paul, Minnesota. The casing was sealed in place using the braden-head grouting method. The Darcy heat
exchanger produced 150 gallons per minute. Photo courtesy David Henrich, CWD/PI, CVCLD, president of Bergerson-Caswell in Maple
Plain, Minnesota.
