What Personal Protective Equipment (PPE) is strictly required for workers operating or charging hot thermoplastic kettles at temperatures exceeding 400°F?

1. Full face shield, heavy leather heat-resistant gloves, long sleeves, and boots.
2. Short-sleeve cotton T-shirt, latex exam gloves, and open-toe sandals.
3. Paper dust mask, safety glasses, and short denim shorts.
4. Standard cloth gardening gloves and clear plastic splash goggles only and nothing else.