Wikipedia
Planing mill
A planing mill is a facility that takes cut and seasoned boards from a sawmill and turns them into finished dimensional lumber. Machines used in the mill include the planer and matcher, the molding machines, and varieties of saws. In the planing mill planer operators use machines that smooth and cut the wood for many different uses.
Usage examples of "planing mill".
And so after a while somebody told her how there was a fellow named Burch or Bunch or something working at the planing mill in Jefferson, and she come on here.
I could hear the Great American Gelding snoring away like a planing mill.
Near the inner wall stood a band saw, a wood lathe, a planing mill and an electric drill.