Fourth Edition - January 2019 (Rev 1.30.19) Prepared by : Contact Us GAIN PO Box 1625 MS 3855 Idaho Falls, ID 83415 (208) 526-7763 Email: GAIN@inl.gov Visit us on the web at gain.inl.gov @GAINnuclear @GAINnuclear @GAINnuclear Editor: Teresa Krynicki Graphics: Phyllis King