Original vintage coal mining ad for SANFORD-DAY IRON WORKS of Knoxville, TN. The Rich Can Get Richer. The Coal Operator with money or credit has a big advantage over his poor competitor who must of necessity buy the cheapest and poorest equipment on the market. Sole Manufacturers of Whitney Roller Bearing and Solid Hub Wheels for Coal Mine Hauling Cars. Old 1910 mining industry advertisement.
Original vintage mining magazine ad for SANFORD-DAY IRON WORKS of Knoxville, TN. 600 Roller-Bearing Whitney Wheels Per Day! Try a Whitney Roller-Bearing Truck Yourself. The Pennsylva..