General Requirements for All Machines (Machine Guarding), 1910.212 OSHA requires that woodworking machines; cooperage machinery; abrasive wheel machinery; mills; power presses; forging machines; portable power tools; welding, cutting, and brazing tools; and tools for specific industries such as paper, textile, bakery, and sawmill, among others, use guards to protect employees from injury. These guards can be barrier-type guards, two hand tripping devices, electronic safety devices, or other guards or devices that effectively prevent injuries.Selection and Use of Electrical Work Practices, 1910.333 Employers must ensure that employees who work on or around electrical equipment or circuits are protected from injury that could result from direct or indirect contact with electrical currents.