October in Plymouth arrives as frost on the pasture by Plymouth Pond and a new bite in the wind coming off the Dixmont hills. B & C Sand & Gravel Inc reads that turn as a signal — leaf work and cleanups wrapped up, plow gear hung on, ready for the nights Route 7 goes white between here and Newport. Through the warm months the same trucks handle mowing, trimming and seasonal cleanups; through the cold ones it is plowing, drives and lots cleared, shoveling and sanding. Driveways in this corner of Penobscot County run long, and there is genuine pride in leaving one open end to end before the school bus comes by. Plymouth, Newport, Detroit, Etna, Carmel and Stetson make up the ground covered.