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American Electric Power Company
American Information Technologies Corporation
American Telephone and Telegraph Communications, Inc.
American Water Works Company, Inc.
Arkla, Inc.
Bell Atlantic Corporation
BellSouth Corporation
Central and South West Corporation
Centel Corporation
CMS Energy, Inc.
Columbia Gas System, Inc.
Continental Telecom, Inc.
Dominion Resources, Inc.
GTE Corporation
Houston Industries, Inc.
Jim Walters Resources, Inc.
MCI Corporation
Northeast Utilities Company
Nynex Corporation
Pacific Telesis Group
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Rochester Telephone Corporation
Southwestern Bell Corporation
Southern Company
Southern New England Telecommunications Corporation
Texas Utilities Company
United Telecom
U.S. West, Inc.
Washington Gas Light Company
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