该小组履行以下部分或全部职责：

枪匠

• 根据图纸或客户的规格制造枪支，修理和改装枪支。

锁匠

• 修理、安装和调整锁具、制作钥匙和更改锁具组合。

保险箱和保险库服务商

• 安装、修理和维护银行和其他机构的保险箱和保险库。

锯钳工

• 根据规格维修、设置和刃磨带锯、链锯、圆锯和其他类型的锯片。

模具安装工

• 根据工单和规格选择锻造模具；位置对齐和螺栓模具到动力压力机和锤子的撞锤和砧座。

商业潜水员

• 进行与建造、检查、搜索、打捞、修理和摄影相关的水下活动。

• 通常需要完成中学学业。
• 完成相关行业的两到四年学徒计划，例如锁匠或锯钳工或大学、高中或行业课程，并需要几年的相关工作经验或几年的在职培训.
• 在新斯科舍省、新不伦瑞克省、萨斯喀彻温省、艾伯塔省、不列颠哥伦比亚省、西北地区和努纳武特地区，锁匠可以获得行业认证，但这是自愿的。
• Sawfiler/fitter 和 sawfitter 贸易认证在魁北克、不列颠哥伦比亚和育空地区是可用的，但自愿的。
• 本单元组的其他职业可能需要省级贸易认证或许可。
• 商业潜水员必须符合 CSA 标准 Z275.4-02 的要求，潜水作业能力标准。
• 商业潜水员需要加拿大潜水员认证委员会 (DCBC) 颁发的职业潜水员能力证书或通过正规教育计划、潜水培训课程或教育与实践经验相结合获得的资格。
• 商业潜水员需要获得认可的高压氧医师的能力认证和潜水体检。
• 商业潜水员可能需要军事或警察潜水经验。
• 商业潜水员通常需要获得省爆破员执照才能安装和引爆炸药。

• 随着经验的积累，可能晋升到主管职位。
• 本单元组的职业之间很少或没有流动性。

• 汽车维修技师 ( 7241)
• 摩托车、越野车及其他相关机械（72423）
• 警察潜水员（在42100名警察中（委任除外））
• 焊工和相关机器操作员（72106）
• 其他小型发动机和小型设备修理工（72429）

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.

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 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.
• 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.
• 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.
• There is little or no mobility among occupations in this unit group.

• Automotive service technicians (7241)
• Motorcycle, all-terrain vehicle and other related mechanics (72423)
• Police diver (in 42100 Police officers (except commissioned))
• Welders and related machine operators (72106)
• Other small engine and small equipment repairers (72429)