1. “Eye and Face Protection,” Code of Federal Regulations Title 29, Part 1910.133(a)(5).
2. Bancroft, K.: “Plasma Arc Cutting Hazards.” Available at https://ohsonline.com/Articles/2003/03/Plasma-Arc-Cutting-Hazards.aspx?Page=1.
3. Plog, B.A.: Fundamentals of Industrial Hygiene. National Safety Council. pp. 1–7.
4. Anna, D.: The Occupational Environment: Its Evaluation, Control, and Management. Virginia: American Industrial Hygiene Association (AIHA). pp. 738–755.