Identifies four types of hoists, or lifting devices, used in industry: the block and tackle, tirfor jack, chain fall and come along. Emphasizes the importance of safety precautions when using the hoists as well as how and when to use each. Includes review questions and answers at the end of the video. Special thanks to Instructor Ivan Holmes. Produced by Pacific Vocational Institute.
Describes the measures needed and options for personal safety when using a portable circular saw. Demonstrates how to change a blade and describes the various types of blades available. Video produced by the Pacific Vocational Institute.