“The gold is melted in a high-temperature furnace along with lead and silver.”

“The charging platform was at a height of 30 meters, and the blast furnace men filled furnaces from there, and controlled the haulage system.”

“Bricks have always been used for years by the construction industry, and for lining of ore smelting furnaces.”

“Photographs of winding towers and cooling towers, of silos, lime kilns and blast furnaces, of coal bunkers and gravel plants.”