Assure: a. be Is Ebr d Assume gamma energy is approximated by comparison with radius, A particle of 150 nicrocuries of beta activity or 7§ microe curies of gamma activity, where: (See Appendix 4.) I © gamma dose rate (r/hr) . . d = centinesters Lets so # 7.5 x 10™ ad 210 on r= (2dlp = 0.063 m/hr gamma dose rate at four incheg yh i - . ete)