#MasonCountyNews #CourtNews By Allison Scarbrough. Editor. LUDINGTON — A 26-year-old Onekama man was sentenced to concurrent terms of three to 20 years and 17 months to 10 years in 51st Circuit Court Tuesday, June 21, for felonies of operating/maintaining a laboratory involving methamphetamine and possession of methamphetamine. In exchange for Mitchel Jared Walkley’s pleas, one count of operating/maintaining a lab…