Tom Rafferty, left, and Wes Hinds, carpenters with Yankee Remodeler, work Monday on adding conduit pipe for an electronic valve to the new water flume at Ye Olde Towne Mill in New London. A grist mill was built on the Mill Street site by John Winthrop Jr., founder of New London, in 1650. It was rebuilt in 1800. The mill was one of Connecticut's earliest industrial sites. During the Colonial era, farmers brought their corn, wheat and rye to the mill to be ground into flour.