Section 410IAC5-6.1-14. "Attenuation block" defined  


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                                    As used in this rule, "attenuation block" means a block or stack of aluminum equivalent material having dimensions twenty (20) cm by twenty (20) cm by three and eight-tenths (3.8) cm. (Indiana State Department of Health; 410 IAC 5-6.1-14; filed Oct 29, 1993, 5:00 p.m.: 17 IR 357; readopted filed Jul 11, 2001, 2:23 p.m.: 24 IR 4234; readopted filed May 22, 2007, 1:44 p.m.: 20070613-IR-410070141RFA; readopted filed Sep 11, 2013, 3:19 p.m.: 20131009-IR-410130346RFA)