Make sure each question has a minimum of 200 words response:
1. Compare and contrast the different the different push-button guards that are commonly used. Discuss the features of each type of push-button guard that are important to ensure that they adequately protect the operator. In your opinion, what is the most important variable to consider in designing a push-button guard?
2. Compare and contrast each of the eight classes of mechanical hazards. Describe the type of injury that may result from these hazards. Provide at least one control method for each of the eight classes.