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.
. .. . ru en Figure Problem created by heater stirring up dust from the floor and blowing dust off of the worker clothing cdc gov html Dust Control Handbook for Industrial Minerals Mining and Processing CDC Andrew Cecala Andrew Brien Joseph Schall et al other versions
Page 2023 Free-images.com. All images are Public Domain