Wood products processing operators monitor and maintain the equipment in wood products and pulp and paper plants.

Railway Car Technicians ensure that trains, streetcars, and subway trains are working correctly. They are responsible for inspecting passenger and freight cars for damage and making necessary repairs. This means working with any of the parts involved in the inner/outer works of a rail car, including compressors, air valves, piping, air cylinders, passenger seats, windows, and washrooms.

Recreation Vehicle (RV) Technicians service and repair recreational vehicles including fifth wheels, truck campers, trailers, and motor homes.

A Refractory Mason restores or replaces linings of furnaces, kilns, and basins by installing refractory bricks, blankets, modules, castables, plastics, or ceramic coatings to protect structures from high heat. This is a specialty trade.

Refrigeration & Air Conditioning Systems Mechanics plan, prepare, and lay out cooling and heating-cooling systems used in residential, commercial, institutional, or industrial settings. They install and start up refrigeration and air cooling systems; connect piping; and maintain, service, repair, and replace cooling system components and accessories.

Reinforcing Rodworkers reinforce concrete. To do this, they fabricate, handle, sort, cut, bend, rig, place, burn, weld and tie all materials used to reinforce the concrete, including steel. They then install the steel and accessories in the building of all types of concrete structures including bridges, reservoirs, buildings, sewers and highways.

Relay & Instrumentation Technicians repair, overhaul, and calibrate vital signal control relays (VSCR) within the transit environment.

Residential Air Conditioning Systems Mechanics prepare, install, maintain, and service residential air conditioning and heat pump systems. They work on any air conditioning system installed as an independent unit in a residential family dwelling. This equipment operates at less than 240V single-phase power with a maximum cooling capacity of 5 tons.

Low Rise Residential Sheet Metal Installers install sheet metal air-handling and ventilation systems in low-rise residential buildings without common air-conditioned areas. Specific work settings include self-contained single-family dwellings like detached, semi-detached, town, and linked homes with wood frame construction.