Going through some of my old photos of Bingham canyon mine (my prototype) I realized I did not have a rotary drill at the Copper King mine. It is not a H O model you can buy, so I scratch built one using a tank from All A Dollar, parts from trains, bridges, and buildings I had leftover. I did not know it was going to turn out so good, I wish I would have filmed the progress. I am going to make a video on my YouTube channel, (Bingham Canyon and Copper King mine), telling about Bingham Canyon Drill and Blast department, it is an exciting time when they blasted at the mine.