More information from O*NET OnLine:

Locksmiths and Safe Repairers - 49-9094.00

O*NET-SOC Description

Repair and open locks, make keys, change locks and safe combinations, and install and repair safes.

49-0000	Installation, Maintenance, and Repair Occupations
49-9000	Other Installation, Maintenance, and Repair Occupations
49-9090	Miscellaneous Installation, Maintenance, and Repair Workers
49-9094.00	Locksmiths and Safe Repairers

47-3013.00	Helpers--Electricians
47-3015.00	Helpers--Pipelayers, Plumbers, Pipefitters, and Steamfitters Bright Outlook
47-4021.00	Elevator and Escalator Installers and Repairers
49-2092.00	Electric Motor, Power Tool, and Related Repairers
49-2096.00	Electronic Equipment Installers and Repairers, Motor Vehicles
49-2098.00	Security and Fire Alarm Systems Installers
49-9011.00	Mechanical Door Repairers
49-9044.00	Millwrights
49-9071.00	Maintenance and Repair Workers, General
49-9098.00	Helpers--Installation, Maintenance, and Repair Workers

Cut new or duplicate keys, using impressions or code key machines.
Cut new or duplicate keys, using key cutting machines.
Disassemble mechanical or electrical locking devices, and repair or replace worn tumblers, springs, and other parts, using hand tools.
Insert new or repaired tumblers into locks to change combinations.
Install alarm and electronic access systems.
Install door hardware, such as locks and closers.
Install safes, vault doors, and deposit boxes according to blueprints, using equipment such as power drills, taps, dies, truck cranes, and dollies.
Keep records of company locks and keys.
Move picklocks in cylinders to open door locks without keys.
Open safe locks by drilling.
Remove interior and exterior finishes on safes and vaults, and spray on new finishes.
Repair and adjust safes, vault doors, and vault components, using hand tools, lathes, drill presses, and welding and acetylene cutting apparatus.
Set up and maintain master key systems.
Unlock cars and other vehicles.