Wis. Stat. § 107.12: Penalty.

If any person operating a metal recovery system or purchaser of nonferrous metallic minerals or the agent of any such person or purchaser doing business fails to keep such a book or to make such entries as required under s. 107.11 or unreasonably refuses to show the book for inspection or taking extracts or makes false entries in the book he or she shall forfeit $10 for each offense, one-half to the use of the prosecutor; and each day such failure or refusal continues shall be deemed a distinct and separate offense.