I've spent an unhealthy part of my life in steel mills.
Yet, I find the processes by which they turn dirt (ore) into washer cabinets fascinating.
The crudeness, the scale of it all. Mind boggling.
The heat, the smoke, all of it.
It's a wonder anything homogeneous comes out of them at all, working such crude processes, at such mammoth scale.
And for much of what this discussion is about, without instrumentation or process controls.
When I first saw men working with cast iron, making it, pouring it, it was all visually controlled.
