Main Content Act 91 of 1967 friendly link printer friendly bills affecting mcl index link Search within this Statute for DAMAGING MINE SHAFT BARRIERSAct 91 of 1967AN ACT to prohibit the destruction, breaking, cutting or damaging of mine shaft barriers or barricades and to impose a penalty. History: 1967, Act 91, Eff. Nov. 2, 1967 The People of the State of Michigan enact: DocumentTypeDescription Section 425.161SectionMine shaft barriers; wilful destruction; penalty.