I know full well what a broom is my dear friend. I keep my shop very clean. I cut my steel and do my welding outside, away from the building on the cement pad in front of my bay doors. I am a contractor who owns some small pieces of heavy equipment. I do cut some wood from time to time in my shop. I also weld from time to time in my shop. My concern was airborne dust from the welding, grinding, torch cutting, table saws, and numerous other dust causing tools getting into my storage cabinets and contaminating regulators.
You should look up the word "assumption" on Wikipedia since you are so familiar with that website.