This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Airstream Helmet. ru Airstream Helmet PAPR DHHS NIOSH Publication No Handbook for Dust Control in Mining cdc gov html Fred Kissel other versions PDUSGov Equipment of individual protection of respiratory system Respirators Masks Workplace safety Workplace safety of Russia Miners
Page 2023 Free-images.com. All images are Public Domain