US lawMontanaStatutesTitle 50Chapter 30Part 250-30-210Mont. Code Ann. § 50-30-210Radioactive substance definedLast amended: 1977Year: 2026Length: 14 wordsOfficial source 50-30-210 . Radioactive substance defined. "Radioactive substance" means a substance which emits ionizing radiation.PreviousMont. Code Ann. § 50-30-209NextMont. Code Ann. § 50-30-211