Duke/ Fluor Daniel • El Paso Electric Company • El Paso Energy • El Paso Natural Gas Company • Enron • Entergy Services, Inc. • Ericsson • Exxon Chemical • Exxon Company USA • Exxon Gas Systems, Inc. • Florida Power and Light • Florida Power Corp. • Fluor Daniel • Fort Bend Telephone Geo • Trans Wireless • Geon • Guadeloupe Valley Electric Coop • Guadeloupe Valley Telephone • Gulf States Utilities • Gulf Telephone • Halco Systems • Harris Corporation • Hoechst Celanese • ITC Deltacom • IXC Communications • Jefferson Parish (LA) Sheriff's Office • Kansas City Southern • KO Communications • KO Communications • Koch Gateway • KVB- Enertec • LCRA • LeBarge • Lockheed Martin • Louisiana Power & Light • Louisiana Resources • Lucent • Lufkin-Conroe Telecom • Measurementation • Minnesota DOT • Mississippi Power & Light • MOBEX • Mobil Oil Corporation • Motorola • Nextel • Northern Telecom • Oklahoma Gas & Electric • Orlando Utilities Commission • Oxychem • Pacific Gas & Electric • Pacific Gas Transmission • Pathnet • PCS Primeco • Progress Telecommunications • Public Service Oklahoma • Radiofone • Raytheon • Riverside County • Rockland Pipeline • Rockwell • San Diego Gas & Electric • San Marcos Telephone Co. • Shell Chemical Company • Shell Oil Company • Sho-Me Power • SMEPA • Solvay • South Carolina Electric & Gas • South Central Bell • Southern California Gas • Southern Pine Electric Power Assn. • Southwestern Bell Wireless Sys. • Splitrock Services, Inc. • Stanford Telecom • Sun Refining • SWEPCO • TASC • Tejas Gas • Tenneco • Texaco • Texaco Pipeline • Texas Utilities • Time Warner Cable • U.S. Army Corps of Engineers • U.S. Border Patrol • UCAR Pipeline • Union Carbide • Union Electric • Union Pacific Railroad • USDA Forest Service • Utah Power & Light Co. • Video Com • Warren Petroleum • West Texas Utilities • Yelcot Telephone • Cumulus Broadcasting • American Family Radio • Progress Telecom • Cablevision • Enron Broadband Services • Knology • ITC Deltacom • SBC • Unitel • Splitrock Services • FAA