Comments by "Seven Proxies" (@sevenproxies4255) on "Engineering America - Forging A Drawknife From Scratch" video.

  1. There were different ways of acquiring iron ore. Mining iron ore from rock had high yields, but was also a very laborious undertaking. But in other parts of history iron would be gathered from bogs (bog iron). Certain bacteria in swamps and bogs would generate deposits on the banks of the bogs. And humans gathered this red clay or soil and smelted it down to retrieve the iron in it.
    3