Down at Townsend Harbor the Squannacook runs black between white banks in deep winter, and the old mill sits there the way it always has, watching the snow come down. Sean S Tocci Excavating runs plow work through those months — driveways, lots and the long gravel approaches out toward Pearl Hill, with sanding and salting wherever the grade turns slick. Gravel wants a lighter touch than pavement, and knowing that is most of the trade. A storm quits around three in the morning; by six the properties are open and the banks are pushed back where they belong. That is a good night's work.