Which of the following is a safety precaution while operating a milling machine?

Wearing safety goggles and keeping hands clear of moving parts is essential for ensuring the safety of the operator while working with a milling machine. Milling machines involve rapidly moving parts and sharp cutting tools that can pose significant risks, including flying debris and accidental contact with moving components. Safety goggles protect the eyes from chips, dust, and other materials that may be ejected during the milling process, preventing potential injuries. Additionally, maintaining hands away from moving parts is crucial to avoid crushing injuries or cuts, which are common hazards in milling operations.

This answer incorporates fundamental safety practices recognized in machine operation and reflects a solid understanding of the risks involved with milling machines. By following this precaution, operators can significantly reduce the likelihood of accidents and enhance overall safety in the workplace.