Mich. Comp. Laws § 426.155
If any person having the possession or control of any boom, in any of the waters of this state shall, knowingly run, turn, admit or receive into such boom, or cause to be run, turned, admitted or received into such boom any log, spar, boomstick, shinglebolt, railroad tie or fence post not his own, without the consent of the owner thereof; or if any person being in the possession or having the control of any saw-mill, shingle-mill or any structure made for the purpose of manufacturing lumber, shingles or timber shall knowingly manufacture into lumber, shingles, timber pickets or posts any log, spar, or shinglebolt not his own, without the consent of the owner thereof, shall be deemed guilty of a misdemeanor and punished as provided in section 4 of this act.
MCL 426.155