1. D. Grubaugh, “Worker killed at Granite City plant,” The Telegraph, 2013.
2. Int. Organization for Standardization (ISO), ISO 13854, Safety of machinery – Minimum gaps to avoid crushing of parts of the human body, 1996.
3. ISO, ISO 13855, Safety of machinery – Positioning of safeguards with respect to the approach speeds of parts of the human body, 2010.
4. ISO, ISO 10218-1:2011, Robots and robotic devices – Safety requirements – Part 1: Robots, 2011.
5. ISO, ISO 10218-2:2011, Robots and robotic devices – Safety requirements – Part 2: Industrial robot systems and integration, 2011.