Discussion:
The Occupational Safety and Health Administration (OSHA) has established a hierarchy of controls for reducing risks associated with hazards at workplaces.
Review OSHA's hierarchy of controls: https://www.osha.gov/dte/grant_materials/fy10/sh-20839-10/hierarchy_of_controls.pdf.
Choose one level of the hierarchy, and discuss a control method with which you are familiar. Summarize the positive and negative attributes of the control method you chose, and suggest the difficulties one might expect to encounter while implementing the control method.