The quietest power tool is not always the most expensive! “Buy Quiet” is the NIOSH campaign for quieter machinery and tools to reduce worker noise exposure. Hear Capt. Chuck Hayden tell how to buy or rent less noisy tools. Capt. Chuck is Research Acoustical Engineer for National Institute For Occupational Safety And Health (NIOSH). NIOSH’s Power Tools Database is an extensive study of just how loud various power tools can be. You can compare manufacturers and models before you buy or rent.