For a welding job, the appropriate personal protective equipment (PPE) would be:
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Eye Protection - Specifically, a welding helmet or goggles should be used to protect the eyes from harmful UV and IR radiation, as well as sparks and debris.
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Hearing Protection - Depending on the noise level of the welding environment, hearing protection such as earplugs or earmuffs may also be necessary to protect against potential hearing damage.
Sunglasses and a baseball hat are not suitable PPE for welding.