CFR /  Title 40  /  Part 421  /  Sec. 421.120 Applicability: Description of the secondary silver

The provisions of this subpart are applicable to discharges resulting from the production of silver from secondary silver facilities processing photographic and nonphotographic raw materials. [49 FR 8821, Mar. 8, 1984; 49 FR 26739, June 29, 1984]