| 220000 |
Public service, utility \ n.s. |
0690 |
| 220000 |
Public utility \ n.s. |
0690 |
| 220000 |
Utility \ n.s. |
0690 |
| 221000 |
City electric and gas utilities |
0590 |
| 221000 |
City electric and water utilities |
0590 |
| 221000 |
City electric, gas and water utilities |
0590 |
| 221000 |
City gas and water utilities |
0590 |
| 221000 |
Electric and gas combined |
0590 |
| 221000 |
Electric and gas utilities |
0590 |
| 221000 |
Electric and water utility |
0590 |
| 221000 |
Electric light and gas co. |
0590 |
| 221000 |
Electric light and water co. |
0590 |
| 221000 |
Electric light, gas and water co. |
0590 |
| 221000 |
Electric power and gas co. |
0590 |
| 221000 |
Electric power and water co. |
0590 |
| 221000 |
Electric power, gas and water co. |
0590 |
| 221000 |
Gas and electric |
0590 |
| 221000 |
Gas and other services combined |
0590 |
| 221000 |
Light and water utilities combined |
0590 |
| 221000 |
Light, water and gas utilities combined |
0590 |
| 221000 |
Public utility gas and steam supply systems |
0590 |
| 221000 |
Public utility, electric and gas |
0590 |
| 221000 |
Water and electric utility |
0590 |
| 221000 |
Water, gas, and electric utility |
0590 |
| 221100 |
Electric light and power co. |
0570 |
| 221100 |
Electric light co. |
0570 |
| 221100 |
Electric power co. |
0570 |
| 221100 |
Electric power, public utility |
0570 |
| 221100 |
Electric power, utility |
0570 |
| 221100 |
Power and light co. |
0570 |
| 221100 |
Power company \ n.s. |
0570 |
| 221100 |
Power company, electric |
0570 |
| 221110 |
City electric light co. |
0570 |
| 221110 |
City electric power co. |
0570 |
| 221110 |
City electric power plant |
0570 |
| 221110 |
City light and power co. |
0570 |
| 221110 |
City street light system |
0570 |
| 221110 |
Generating plant \ n.s. |
0570 |
| 221110 |
Power plant, electrical generation |
0570 |
| 221110 |
Public service, electric |
0570 |
| 221110 |
Public utility electric company |
0570 |
| 221110 |
Public utility electric light and power co. |
0570 |
| 221110 |
Public utility power co. \ n.s. |
0570 |
| 221110 |
Utility, electrical |
0570 |
| 221111 |
Dam, electric power |
0570 |
| 221111 |
Electric generating plant |
0570 |
| 221111 |
Electric power generation |
0570 |
| 221111 |
Electric power plant |
0570 |
| 221111 |
Electrical generating plant |
0570 |
| 221111 |
Hydroelectric plant |
0570 |
| 221111 |
Hydroelectric power co. |
0570 |
| 221111 |
Power dam |
0570 |
| 221111 |
U.S. Bonneville Power Administration |
0570 |
| 221111 |
U.S. Bonneville Power Commission |
0570 |
| 221111 |
U.S. Southwestern Power Admin |
0570 |
| 221113 |
Nuclear power plant |
0570 |
| 221119 |
Substation, electric |
0570 |
| 221120 |
Impounding station, power dam |
0570 |
| 221120 |
Utility, power |
0570 |
| 221121 |
City electric light and power co. |
0570 |
| 221121 |
Electric power transmission |
0570 |
| 221121 |
Light and power utilities |
0570 |
| 221121 |
Light co., electric power |
0570 |
| 221121 |
Light plant, electric power |
0570 |
| 221121 |
Rural Electrification Association |
0570 |
| 221121 |
Rural power |
0570 |
| 221121 |
Street light system |
0570 |
| 221121 |
Transmission of electric power |
0570 |
| 221122 |
Electric power brokers |
0570 |
| 221122 |
Electric power distribution |
0570 |
| 221122 |
Electric power marketers |
0570 |
| 221122 |
Electric utilities co. |
0570 |
| 221122 |
Power line maintenance |
0570 |
| 221210 |
Broker, natural gas |
0580 |
| 221210 |
City gas distribution co. |
0580 |
| 221210 |
City gas works |
0580 |
| 221210 |
City natural gas distribution |
0580 |
| 221210 |
Coke oven, gas distribution |
0580 |
| 221210 |
Coke oven, gas production |
0580 |
| 221210 |
Compressor station, natural gas |
0580 |
| 221210 |
Gas booster station |
0580 |
| 221210 |
Gas co. \ n.s. |
0580 |
| 221210 |
Gas compressor station |
0580 |
| 221210 |
Gas conversion, gas co. |
0580 |
| 221210 |
Gas distribution co. |
0580 |
| 221210 |
Gas pipe line |
0580 |
| 221210 |
Gas utility |
0580 |
| 221210 |
Gas utility co. |
0580 |
| 221210 |
Gas works |
0580 |
| 221210 |
Liquefied petroleum gas, distribution through mains |
0580 |
| 221210 |
Manufactured gas, utility |
0580 |
| 221210 |
Mixed gas distribution |
0580 |
| 221210 |
Natural gas brokers |
0580 |
| 221210 |
Natural gas co., \ n.s. |
0580 |
| 221210 |
Natural gas distribution |
0580 |
| 221210 |
Natural gas marketers |
0580 |
| 221210 |
Natural gas service |
0580 |
| 221210 |
Natural gas storage by gas utility |
0580 |
| 221210 |
Natural gas supplier |
0580 |
| 221210 |
Natural gas utility |
0580 |
| 221210 |
Private gas co. |
0580 |
| 221210 |
Utility gas co. |
0580 |
| 221310 |
Aqueduct operation |
0670 |
| 221310 |
Canal irrigation |
0670 |
| 221310 |
City Public Works, sanitation |
0670 |
| 221310 |
City Water Commissioners, Board of |
0670 |
| 221310 |
City Water District, irrigation |
0670 |
| 221310 |
City filter plant |
0670 |
| 221310 |
City irrigation district |
0670 |
| 221310 |
City irrigation system |
0670 |
| 221310 |
City waterworks |
0670 |
| 221310 |
Desalination of water |
0670 |
| 221310 |
Filter plant, water |
0670 |
| 221310 |
Filtration plant |
0670 |
| 221310 |
Impounding reservoir, irrigation |
0670 |
| 221310 |
Irrigation co. |
0670 |
| 221310 |
Irrigation ditch |
0670 |
| 221310 |
Irrigation pumping plant |
0670 |
| 221310 |
Irrigation system |
0670 |
| 221310 |
Public utility water supply |
0670 |
| 221310 |
Pumping station, water works |
0670 |
| 221310 |
Reservoir, water supply |
0670 |
| 221310 |
State Irrigation Service |
0670 |
| 221310 |
State Water Department |
0670 |
| 221310 |
Water board |
0670 |
| 221310 |
Water department |
0670 |
| 221310 |
Water district, irrigation |
0670 |
| 221310 |
Water filtration plant |
0670 |
| 221310 |
Water supply co. |
0670 |
| 221310 |
Water supply system, irrigation |
0670 |
| 221310 |
Water supply system, utility |
0670 |
| 221310 |
Water treatment plants |
0670 |
| 221310 |
Water works, utility |
0670 |
| 221320 |
City Public Works, sewage system |
0680 |
| 221320 |
City Sanitation Department |
0680 |
| 221320 |
City Sanitation Department, sewage system |
0680 |
| 221320 |
City Sewer Department |
0680 |
| 221320 |
City Water and Sewage, Department of |
0680 |
| 221320 |
City disposal plant |
0680 |
| 221320 |
City maintenance, sewer |
0680 |
| 221320 |
City sewage disposal |
0680 |
| 221320 |
City sewer system |
0680 |
| 221320 |
City waste water |
0680 |
| 221320 |
Disposal plant |
0680 |
| 221320 |
Public utility sanitary services |
0680 |
| 221320 |
Public utility sanitary services, sewage treatment |
0680 |
| 221320 |
Sanitary department |
0680 |
| 221320 |
Sanitary service |
0680 |
| 221320 |
Sanitary service, sewage system |
0680 |
| 221320 |
Sanitary works, sewage disposal |
0680 |
| 221320 |
Sewer system operation |
0680 |
| 221320 |
Sewerage department |
0680 |
| 221320 |
Sewerage disposal plant |
0680 |
| 221320 |
Sewerage systems |
0680 |
| 221320 |
Sewerage treating plant |
0680 |
| 221320 |
State waste water treatment |
0680 |
| 221320 |
Waste water treatment |
0680 |
| 221330 |
Central heating plant |
0670 |
| 221330 |
Generating steam plant |
0670 |
| 221330 |
Heating plant, utility |
0670 |
| 221330 |
Heating systems, steam |
0670 |
| 221330 |
Heating, steam plant |
0670 |
| 221330 |
Steam generating plant |
0670 |
| 221330 |
Steam heating co., utility |
0670 |
| 221330 |
Steam heating systems |
0670 |
| 221330 |
Steam plant, heating |
0670 |
| 221330 |
Steam supply systems |
0670 |
