R 325.5229 Area and room signs.

Rule 229. (1) Each area or room in which any radioactive material, other than natural uranium or thorium, is used or stored in an amount exceeding 10 times the quantity of radioactive material specified in Rule 271 shall be conspicuously posted with 1 or more signs bearing the radiation caution symbol and the following words: CAUTION RADIOACTIVE MATERIAL (2) Each area or room in which natural uranium or thorium is used or stored in an amount exceeding 100 times the quantity specified in Rule 271 shall be conspicuously posted with a sign or signs bearing the radiation caution symbol and the following words: