"Attenuation block" means a block or stack having the dimensions 20 cm by 20 cm by 3.8 cm, of type 1100 aluminum alloy or other materials having equivalent attenuation.
Nev. Admin. Code § 459.408
NRS 459.201
"Attenuation block" means a block or stack having the dimensions 20 cm by 20 cm by 3.8 cm, of type 1100 aluminum alloy or other materials having equivalent attenuation.
Nev. Admin. Code § 459.408
NRS 459.201