Safety

Hazards: inhalation, noise, projectile, burns, laceration (sharp tools and edges), bright light/UV (welding), entanglement
PPE: Hearing protection, eye protection, respirator (P100), FRED Welding fume extractor
Most work in the metal room is hazardous not only to you but to everyone nearby. Warn people if you're producing hazardous noise, dust, light (ie welding). Don't leave hot objects unattended.
Watch what other people are doing in case they produce an unexpected hazard.
If doing hot works, you must keep direct watch for 60 minutes. Use an IR thermometer to check for hotspots.

Housekeeping

Dispose of scrap metal in the scrap metal barrels. Don't leave sharp edges poking out where they can stab someone.