Special form radioactive material means radioactive material that satisfies the following conditions:
Source material milling means any activity that results in the production of byproduct material as defined by definition (2) of byproduct material.
Permissive Aggregation Group means the Required Aggregation Group of plans plus any other plan or plans of the Employer which, when considered as a group with the Required Aggregation Group, would continue to satisfy the requirements of Code Sections 401(a)(4) and 410.
Source material means: (1) uranium or thorium, or any combination thereof, in any physical or chemical form or (2) ores which contain by weight one-twentieth of one percent (0.05 percent) or more of (i) uranium, (ii) thorium or (iii) any combination thereof. Source material does not include special nuclear material.
Required Aggregation Group means: (i) each qualified plan of the Employer in which at least one Key Employee participates at any time during the Determination Period; and (ii) any other qualified plan of the Employer which enables a plan described in clause (i) to meet the requirements of Code Section 401(a)(4) or of Code Section 410.