Johnson's the builders have a small workshop and sawmill in the lower part of the old stoneworking yard. The Mill Dam is now filled in as an overspill car-park for local businesses and the local Clinic. Sadly, the buildings may be demolished if a new supermarket is built in the area. Mill Isle Corn Mill was built sometime in the 1600s on a lade downstream from the Mill Dam. By 1835 it had become the woodyard and sawmill run later in 1880 by Thomas and William Helme.
Nothing is known to survive.
Threshing Mill was shown on the 1863 Ordnance Survey map of the Dalbeattie area, on a bend of the Burn some hundreds of yards south of Mill Isle. It is suspected that this is one of several feed and threshing mills in the Dalbeattie area. Biggar's or Port Mill was steam-powered from the outset, built in 1865 by James Biggar to replace his earlier 'Meikle Mill' works on the Haugh of Urr Road. At both sites, bones and acid were used to make superphosphate fertiliser. A site beside the Port gave the Mill easy access to the bargeloads of imported coal and bonemeal from Liverpool needed to supply the mill.