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Northwood Laboratory
Serving the Northern Great Plains and Canadian Prairies
804 Highway 15 West
P.O. Box 510
Northwood, ND 58267
Phone: 701-587-6010
Fax: 701-587-6013
Benson Laboratory
Serving the Upper Midwest and Southern Great Plains
902 13th Street North
P.O. Box 187
Benson, MN 56215
Phone: 320-843-4109
Fax: 320-843-2047