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This group performs some or all of the following duties:

Gunsmiths

• Fabricate guns and repair and modify firearms according to blueprints or customers' specifications.

Locksmiths

• Repair, install and adjust locks, make keys and change lock combinations.

Recreation vehicle technicians

• Repair or replace electrical wiring, plumbing, propane gas lines, appliances, windows, doors, cabinets and structural frames in recreational vehicles.

Safe and vault servicers

• Install, repair and maintain safes and vaults in banks and other establishments.

Saw fitters

• Repair, set and sharpen band saws, chain saws, circular saws and other types of saw blades according to specifications.

Die setters

• Select dies for forging according to work order and specifications; position align and bolt dies to ram and anvil of power presses and hammers.

Commercial divers

• Perform underwater activities related to construction, inspection, search, salvage, repair and photography.

• Completion of secondary school is usually required.
• Completion of a two- to four-year apprenticeship program in a relevant trade, such as locksmith, recreation vehicle technician or saw fitter or college, high school or industry courses combined with several years of related work experience or several years of on-the-job training are required.
• Trade certification for locksmiths is available, but voluntary, in Nova Scotia, New Brunswick, Saskatchewan, Alberta, British Columbia, the Northwest Territories and Nunavut.
• Trade certification for recreation vehicle service technicians is compulsory in Alberta and available, but voluntary, in Newfoundland and Labrador, Nova Scotia, Prince Edward Island, New Brunswick, Quebec, Ontario, Manitoba, British Columbia and the Yukon.
• Sawfiler/fitter and sawfitter trade certification is available, but voluntary, in Quebec, British Columbia and the Yukon.
• Provincial trade certification or licensing may be required for other occupations in this unit group.
• Red Seal endorsement is also available to qualified recreation vehicle service technicians upon successful completion of the interprovincial Red Seal examination.
• Commercial divers must meet the requirements of CSA Standard Z275.4-02, Competency Standard for Diving Operations.
• Commercial divers require an Occupational Diver Certificate of Competency issued by the Diver Certification Board of Canada (DCBC) or qualification earned through a formal education program, training courses in diving or a combination of education and practical experience.
• Commercial divers require certification of competency and a diving medical examination from an approved hyperbaric physician.
• Commercial divers may require military or police diving experience.
• Commercial divers usually require a provincial blaster's licence for the setting and detonation of explosives.

• Progression to supervisory positions is possible with experience.
• The Red Seal endorsement allows for interprovincial mobility.
• There is little or no mobility among occupations in this unit group.

• Automotive service technicians (732)
• Motorcycle, all-terrain vehicle and other related mechanics (7334)
• Other small engine and small equipment repairers (7335)
• Police divers (in 4311 Police officers (except commissioned))
• Welders and related machine operators (7237)