| 220 |
Public service, utility \ n.s. |
069 |
| 220 |
Public utility \ n.s. |
069 |
| 220 |
Utility \ n.s. |
069 |
| 221 |
City electric and gas utilities |
059 |
| 221 |
City electric and water utilities |
059 |
| 221 |
City electric, gas and water utilities |
059 |
| 221 |
City gas and water utilities |
059 |
| 221 |
Electric and gas combined |
059 |
| 221 |
Electric and gas utilities |
059 |
| 221 |
Electric and water utility |
059 |
| 221 |
Electric light and gas co. |
059 |
| 221 |
Electric light and water co. |
059 |
| 221 |
Electric light, gas and water co. |
059 |
| 221 |
Electric power and gas co. |
059 |
| 221 |
Electric power and water co. |
059 |
| 221 |
Electric power, gas and water co. |
059 |
| 221 |
Gas and electric |
059 |
| 221 |
Gas and other services combined |
059 |
| 221 |
Light and water utilities combined |
059 |
| 221 |
Light, water and gas utilities combined |
059 |
| 221 |
Public utility gas and steam supply systems |
059 |
| 221 |
Public utility, electric and gas |
059 |
| 221 |
Water and electric utility |
059 |
| 221 |
Water, gas, and electric utility |
059 |
| 2211 |
Electric light and power co. |
057 |
| 2211 |
Electric light co. |
057 |
| 2211 |
Electric power co. |
057 |
| 2211 |
Electric power, public utility |
057 |
| 2211 |
Electric power, utility |
057 |
| 2211 |
Power and light co. |
057 |
| 2211 |
Power company \ n.s. |
057 |
| 2211 |
Power company, electric |
057 |
| 22111 |
City electric light co. |
057 |
| 22111 |
City electric power co. |
057 |
| 22111 |
City electric power plant |
057 |
| 22111 |
City light and power co. |
057 |
| 22111 |
City street light system |
057 |
| 22111 |
Generating plant \ n.s. |
057 |
| 22111 |
Power plant, electrical generation |
057 |
| 22111 |
Public service, electric |
057 |
| 22111 |
Public utility electric company |
057 |
| 22111 |
Public utility electric light and power co. |
057 |
| 22111 |
Public utility power co. \ n.s. |
057 |
| 22111 |
Utility, electrical |
057 |
| 221111 |
Dam, electric power |
057 |
| 221111 |
Electric generating plant |
057 |
| 221111 |
Electric power generation |
057 |
| 221111 |
Electric power plant |
057 |
| 221111 |
Electrical generating plant |
057 |
| 221111 |
Hydroelectric plant |
057 |
| 221111 |
Hydroelectric power co. |
057 |
| 221111 |
Power dam |
057 |
| 221111 |
U.S. Bonneville Power Administration |
057 |
| 221111 |
U.S. Bonneville Power Commission |
057 |
| 221111 |
U.S. Southwestern Power Admin |
057 |
| 221113 |
Nuclear power plant |
057 |
| 221119 |
Substation, electric |
057 |
| 22112 |
Impounding station, power dam |
057 |
| 22112 |
Utility, power |
057 |
| 221121 |
City electric light and power co. |
057 |
| 221121 |
Electric power transmission |
057 |
| 221121 |
Light and power utilities |
057 |
| 221121 |
Light co., electric power |
057 |
| 221121 |
Light plant, electric power |
057 |
| 221121 |
Rural Electrification Association |
057 |
| 221121 |
Rural power |
057 |
| 221121 |
Street light system |
057 |
| 221121 |
Transmission of electric power |
057 |
| 221122 |
Electric power brokers |
057 |
| 221122 |
Electric power distribution |
057 |
| 221122 |
Electric power marketers |
057 |
| 221122 |
Electric utilities co. |
057 |
| 221122 |
Power line maintenance |
057 |
| 221210 |
Broker, natural gas |
058 |
| 221210 |
City gas distribution co. |
058 |
| 221210 |
City gas works |
058 |
| 221210 |
City natural gas distribution |
058 |
| 221210 |
Coke oven, gas distribution |
058 |
| 221210 |
Coke oven, gas production |
058 |
| 221210 |
Compressor station, natural gas |
058 |
| 221210 |
Gas booster station |
058 |
| 221210 |
Gas co. \ n.s. |
058 |
| 221210 |
Gas compressor station |
058 |
| 221210 |
Gas conversion, gas co. |
058 |
| 221210 |
Gas distribution co. |
058 |
| 221210 |
Gas pipe line |
058 |
| 221210 |
Gas utility |
058 |
| 221210 |
Gas utility co. |
058 |
| 221210 |
Gas works |
058 |
| 221210 |
Liquefied petroleum gas, distribution through mains |
058 |
| 221210 |
Manufactured gas, utility |
058 |
| 221210 |
Mixed gas distribution |
058 |
| 221210 |
Natural gas brokers |
058 |
| 221210 |
Natural gas co., \ n.s. |
058 |
| 221210 |
Natural gas distribution |
058 |
| 221210 |
Natural gas marketers |
058 |
| 221210 |
Natural gas service |
058 |
| 221210 |
Natural gas storage by gas utility |
058 |
| 221210 |
Natural gas supplier |
058 |
| 221210 |
Natural gas utility |
058 |
| 221210 |
Private gas co. |
058 |
| 221210 |
Utility gas co. |
058 |
| 221310 |
Aqueduct operation |
067 |
| 221310 |
Canal irrigation |
067 |
| 221310 |
City Public Works, sanitation |
067 |
| 221310 |
City Water Commissioners, Board of |
067 |
| 221310 |
City Water District, irrigation |
067 |
| 221310 |
City filter plant |
067 |
| 221310 |
City irrigation district |
067 |
| 221310 |
City irrigation system |
067 |
| 221310 |
City waterworks |
067 |
| 221310 |
Desalination of water |
067 |
| 221310 |
Filter plant, water |
067 |
| 221310 |
Filtration plant |
067 |
| 221310 |
Impounding reservoir, irrigation |
067 |
| 221310 |
Irrigation co. |
067 |
| 221310 |
Irrigation ditch |
067 |
| 221310 |
Irrigation pumping plant |
067 |
| 221310 |
Irrigation system |
067 |
| 221310 |
Public utility water supply |
067 |
| 221310 |
Pumping station, water works |
067 |
| 221310 |
Reservoir, water supply |
067 |
| 221310 |
State Irrigation Service |
067 |
| 221310 |
State Water Department |
067 |
| 221310 |
Water board |
067 |
| 221310 |
Water department |
067 |
| 221310 |
Water district, irrigation |
067 |
| 221310 |
Water filtration plant |
067 |
| 221310 |
Water supply co. |
067 |
| 221310 |
Water supply system, irrigation |
067 |
| 221310 |
Water supply system, utility |
067 |
| 221310 |
Water treatment plants |
067 |
| 221310 |
Water works, utility |
067 |
| 221320 |
City Public Works, sewage system |
068 |
| 221320 |
City Sanitation Department |
068 |
| 221320 |
City Sanitation Department, sewage system |
068 |
| 221320 |
City Sewer Department |
068 |
| 221320 |
City Water and Sewage, Department of |
068 |
| 221320 |
City disposal plant |
068 |
| 221320 |
City maintenance, sewer |
068 |
| 221320 |
City sewage disposal |
068 |
| 221320 |
City sewer system |
068 |
| 221320 |
City waste water |
068 |
| 221320 |
Disposal plant |
068 |
| 221320 |
Public utility sanitary services |
068 |
| 221320 |
Public utility sanitary services, sewage treatment |
068 |
| 221320 |
Sanitary department |
068 |
| 221320 |
Sanitary service |
068 |
| 221320 |
Sanitary service, sewage system |
068 |
| 221320 |
Sanitary works, sewage disposal |
068 |
| 221320 |
Sewer system operation |
068 |
| 221320 |
Sewerage department |
068 |
| 221320 |
Sewerage disposal plant |
068 |
| 221320 |
Sewerage systems |
068 |
| 221320 |
Sewerage treating plant |
068 |
| 221320 |
State waste water treatment |
068 |
| 221320 |
Waste water treatment |
068 |
| 221330 |
Central heating plant |
067 |
| 221330 |
Generating steam plant |
067 |
| 221330 |
Heating plant, utility |
067 |
| 221330 |
Heating systems, steam |
067 |
| 221330 |
Heating, steam plant |
067 |
| 221330 |
Steam generating plant |
067 |
| 221330 |
Steam heating co., utility |
067 |
| 221330 |
Steam heating systems |
067 |
| 221330 |
Steam plant, heating |
067 |
| 221330 |
Steam supply systems |
067 |
