When on any construction site, a worker may be asked to use dangerous power tools. Workers should learn how to use the following power tools before beginning any assignment: Chainsaws: Chainsaws are very powerful, and they should be handled with care. Always keep away from other onsite workers while using this tool and remain on level ground. Table saws: Table saws are very convenient because they allow the worker to cut in straight lines and quickly trim wood to size. Workers must use protective gear and a guide to keep materials on the table. Also, lower the blade and use a push anchor to keep hands away from the blade. Power drills: Power drills are extremely efficient, but workers must use the proper bits and fittings to avoid injuries. Lawnmowers: Always wear shoes when using a lawnmower and survey the area. Additionally, turn off the mower completely before checking or replacing the blade. Nail guns: Nail guns should only be pointed at the material used, and no one should be on the other side of the area where an individual is working.