Earlier quoted context omitted.
Look at all the people involved in machine manufacture, transport, mining, etc. for sure. The point being made is that more and more tonnes of raw material are being shipped to smelters per person than ever before. Automation is still advancing so this will only increase, automation is also advancing in processing and production - we no longer need vast numbers of people to produce a billion tonnes of steel, and the…
> The point being made is that more and more tonnes of raw material are being shipped to smelters per person than ever before. your argument fails to prove that for above mentioned fault in how you count the people involved.
https://www.spglobal.com/marketintelligence/en/campaigns/met...
You can access annual reports and technical reports on pretty much all the major mine sites about the globe, capital investments, plant sizes, work forces, etc.
then expand outwards mapping supply chain networks, etc. You know, the usual legwork.