Wisconsin Statutes Environmental Regulation (Ch. 280 to 299) § 293.91. Nonconforming sites

(1) All prospectors and operators conducting mining operations in this state on July 3, 1974 shall submit to the department, within 90 days after that date, applications for prospecting permits or mining permits as provided in ss. 293.35 and 293.37.Sections 293.13(1)(b) and 293.49(2) shall not apply to such operators.

(2) Modification of existing prospecting and mining sites and of operating procedures to conform with this chapter and rules adopted under this chapter shall be accomplished as promptly as possible, but the department shall give special consideration to a site where it finds that the degree of necessary improvement is of such extent and expense that compliance cannot be accomplished.