There are as many hazards created by moving machine parts as there are types of machines. Safeguards are essential for protecting operators from preventable injuries.  Any machine part, function, or process that might cause injury must be safeguarded. When the operation of a machine or accidental contact with it could injure the operator or others in the vicinity, the hazards must be either controlled or eliminated.  Examples of the types of equipment that could be used at Princeton University that require machine guarding include (but are not limited to): saws, lathes, milling machines, meat slicers, and grinders.