US lawMinnesotaRegulationsDEPARTMENT OF HEALTHChapter 4731 — CHAPTER 4731, RADIATION SAFETY4731.4200Minn. R. 4731.4200POSTINGLast amended: 2004Year: 2026Length: 29 wordsOfficial source All areas in which industrial radiography is being performed must be conspicuously posted according to part 4731.2310 . Exceptions under part 4731.2320 do not apply to industrial radiographic operations.PreviousMinn. R. 4731.4190NextMinn. R. 4731.4210