EX-21.A 8 c68205ex21-a.txt SUBSIDIARIES EXHIBIT 21-A OTTER TAIL CORPORATION Subsidiaries of the Registrant March 1, 2002 Company State of Organization Minnesota-Dakota Generating Company Minnesota Otter Tail Realty Company Minnesota Otter Tail Energy Services Company, Inc. Minnesota Otter Tail Energy Management Company Minnesota Otter Tail Management Corporation* Minnesota ORD Corporation* Minnesota Quadrant Co.* Minnesota Varistar Corporation Minnesota Northern Pipe Products, Inc. North Dakota Vinyltech Corporation Arizona T.O. Plastics, Inc. Minnesota St. George Steel Fabrication, Inc. Utah Precision Machine, Inc. North Dakota DMI Industries, Inc. North Dakota Dakota Engineering, Inc.* North Dakota BTD Manufacturing, Inc. Minnesota Mid-States Testing Company* Minnesota DMS Health Technologies North Dakota DMS Imaging, Inc. North Dakota Nuclear Consultants, Inc. South Dakota Midwest Imaging L.L.C Kansas Nuclear Imaging of Kansas, L.L.C Kansas Nuclear Imaging, Ltd. South Dakota DMS Leasing Corporation North Dakota Aerial Contractors, Inc. North Dakota Moorhead Electric, Inc. Minnesota Chassis Liner Corporation Minnesota Chassis Liner Credit Corp.* Minnesota Chart Automotive LLC Minnesota Chart Liner U.L.C Nova Scotia E. W. Wylie Corporation North Dakota Midwest Information Systems, Inc. Minnesota Midwest Telephone Company Minnesota Osakis Telephone Company Minnesota The Peoples Telephone Company of Bigfork Minnesota Data Video Systems, Inc. Minnesota MIS Investments, Inc. Minnesota Otter Tail Communications SD, Inc.* South Dakota Fargo Baseball, LLC Minnesota Fargo Sports Concession LLC Minnesota KFGO, Inc.* North Dakota *Inactive