Request for bids: Mason County Central Schools roofing project.SCOTTVILLE — Notice to contractors, sealed bids for Mason County Central High School re-roofing project will be received at 300 W. Broadway Ave., Scottville, Michigan, 49454, until 2 p.m. (prevailing local time) on May 7, 2019, at the office of the Mason County Central School District, and at that time will be…