NORTH CLARENDON, Vermont — A southern Vermont lumber mill is closing its doors. Mill River Lumber in Clarendon is the second lumber mill to close recently; A. Johnson Lumber in Bristol closed last year. Workers at Mill River Lumber were only able to confirm the mill is in the process of closing but did not give a reason why or an exact date. The mill was created in 1983. The Vermont Department of Forests, Parks and Recreation says the last 18 months have hit both loggers and mills hard. Recent winters with above-average warm temperatures, as well as wet summers, have decreased the time loggers can spend chopping down trees, like the eastern white pine that Mill River Lumber processes. …“Sawmills seem to be like the dairy farms, they’re getting less and less, a few every year disappear,” Joe Gagnon said.