An update of my HO scale model train DCC layout modeled after The NS Pittsburgh Line along with CSX traffic. The table layout started a few years ago and it was time to add on and expand the layout. The new work in progress shows the shelf layout running along the back wall and around the hot water tank/furnace starting with a mini steel mill (not finished) and small industrial area in Pittsburgh, locomotive and car shop service buildings in Altoona (my daughter has some old buildings setup but not quite) and a track loop around Harrisburg,PA. Major traffic is coal, black diamonds, from the coal mine to a coal power plant outside of Harrisburg. Currently finishing up on laying a few more sections of track, soldering jumper wires to the tracks and putting model kits together.