A stretch of Highway 401 through eastern Ontario remained closed early Wednesday following weather-related collisions that left one person dead, 28 people injured and officials scrambling to contain a chemical spill. Ontario Provincial Police say there were two collisions on the highway near Kingston on Tuesday blamed on wind-whipped snow and slick roads. It was not immediately clear when the highway would fully reopen. Const. Sandra Barr said the first collision at about 2 p.m. involved five tractor trailers and a car. The second collision, also in the westbound lanes and about one kilometre away, involved seven tractor trailers and three vehicles.