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_Canada _and_the_United_States Rail transportation in Canada and the United States today consists primarily of freight shipments. Passenger service, once a large and vital part of the nation's passenger transportation network, now plays a limited role as compared to transportation patterns in many other countries. The U.S. rail industry has experienced repeated convulsions due to changing eco...
An electrician is a tradesman specializing in electrical wiring of buildings, transmission lines, stationary machines, and related equipment.Electricians may be employed in the installation of new electrical components or the maintenance and repair of existing electrical infrastructure. Electricians may also specialize in wiring ships, airplanes, and other mobile platforms, as well as data and ...