Electric generators; wind turbines; coal mining machines, namely, coal plows, coal augers; machines for laying electric cables, namely trenching machines and automatic cable feeders and splicers

Electric cables; electrical transformers; electrical distribution boxes; electrical components, namely, branch boxes, capacitors, electric switches, connectors, electromagnets, resistors, telecommunications apparatus, namely, telephones, switchboards and frames

Solar heating panels; gas generators for water purification; public utility water and gas distribution installations; water purification units; gas scrubbing systems comprised of gas scrubbers, chemical feed equipment, namely, positive displacement chemical feed pumps, centrifugal recycle pumps, fans, recycle tanks, storage tanks, mist eliminators, control panels, ducts, and hoods, all sold as a unit

Educational publications, namely, training manuals in the field of electric power, and electricity, water and gas distribution

Radio communication, telephone communication services, and telegraph services via computer networks; facsimile transmission; telecommunications services, namely telex services; cable television broadcasting; cellular telephone services; electronic transmission of messages and data by computer; rental of telecommunications equipment, namely, modems, telephones, and facsimile machines

Public utility services in the nature of water distribution; transmission of oil or gas through pipelines; utility services in the nature of electrical power distribution to retail, wholesale, industrial and commercial customers

Restaurants; engineering; technical consultation and research in the field of engineering; product research and development relating to the generation and distribution of electricity and gas, water distribution, coal extraction, telecommunications and environmental protection; planning, appraisal, valuations, and survey research relating to electricity