This black and white image, from State Records NSW, shows the Hadfield Works in Alexandria, New South Wales, Australia, in March of 1925. The men in this photo are hard at work creating the first steel forgings at the plant.
Working with iron and brawn, the well-dressed workers seen above would go on to produce some of the components that went into the Sydney Harbour Bridge, a well-known Australian landmark that opened on March 19, 1932.
Technology has advanced considerably since those days, but the metal forging process remains largely the same. All it takes is molten metal, heavy duty tools, and burly men who aren’t afraid to break a sweat at work.