Any blacksmiths here?

When I worked at the landfill there was a blacksmiths shop. I was able to visit there once in awhile
They had a large forge and a big air hammer which was run by steam at one time....Only the blacksmith operated that hammer for obvious reasons
They would forge many parts and often hammer weld various items. I saw oblong rings about a inch diameter round bar that had to be one hundred percent properly made and to exact inside dimensions
That took some skill