Final answer:
Four safety precautions when dealing with pneumatic tools are wearing eye protection, using hearing protection, wearing gloves and goggles, and ensuring ventilation.
Step-by-step explanation:
- Wear safety goggles or sunglasses to protect your eyes from injury.
- Wear hearing protectors, such as ear plugs, to protect your ears from loud sounds.
- Use gloves, goggles, or safety aprons when instructed to do so.
- Ensure ventilation and follow manufacturers' instructions when using products or appliances that may release pollutants into the indoor air.