OAR 345-092-0025


The definitions set out in ORS 469.300 (Definitions) apply in interpreting rules in this division, unless the context requires otherwise or unless a term is specifically defined in this rule.


“Uranium mill” means a site at which ore is milled primarily for the recovery of uranium by conventional methods, which involve the crushing, grinding and leaching (acid or alkaline) of the ore, followed by chemical separation and concentration of uranium. As used in this division, “uranium mill” does not include facilities for the extraction of uranium by in situ mining or heap leaching.


“Mill tailings” means the residues remaining after extraction of uranium from its ore at a uranium mill.


“Related or supporting facilities” means, in addition to related or supporting facilities as defined in ORS 469.300 (Definitions), structures adjacent to and associated with a uranium mill including areas from which ore is mined to produce feed material for the mill, ponds designed for the storage of mill tailings or other materials and any sites for the permanent disposal of mill tailings and mine overburden.


The term “facility” means a uranium mill and its related or supporting facilities.


“Facility boundary” means the boundary within which the applicant or site certificate holder has the legal right to control the access of individuals.
Last Updated

Jun. 8, 2021

Rule 345-092-0025’s source at or​.us