The name looks back toward an east-side Detroit neighborhood the city has not forgotten, and the work looks forward to the next storm. Black Bottom Services plows and shovels through the winter the river makes — damp cold, heavy wet snow, then a clear night that turns every puddle to glass. Drives and walks get opened, edges cut back to the pavement, salt laid down where the ice keeps returning. On a still morning after a big one, sound travels a long way in this city, and the first thing anybody hears is a blade finding concrete. Then the block gets on with its day.