Look here: https://www.hybritdevelopment.com/ https://www.hybritdevelopment.com/ Particularly the "Downloads" section, they have quite a bit of info reasonably

Look here: https://www.hybritdevelopment.com/ https://www.hybritdevelopment.com/ Particularly the "Downloads" section, they have quite a bit of info reasonably easy to digest for interested lay people. It may be expensive, but it's pretty much the only game in town. The only possible alternative is direct electrolysis, but that's even less developed. The hydrogen path is from what I understand technically not that much different from direct reduced iron with natural gas, which is something that already is in use for a significant chunk of steel production.