radioactive : yellow nuclear radioactive ionizing radiation danger warning painted on a massive rusty metal plate

abandoned alert and atomic background brown building caution contamination corrosion danger dangerous dark derelict dirty emission energy enter factory fixed green hazard industrial ionizing iron life massive material metal metallic moss not nuclear old painted plate plutonium pollution power radiation radioactive radioactivity reactor rivets round rust rusted rusty safety science screws sign steel symbol texture threatening uranium wall warning waste yellow