There's the capacity to make whatever mechanical equipment is required domestically as well as more aluminium than the country would require, I think most if no

There's the capacity to make whatever mechanical equipment is required domestically as well as more aluminium than the country would require, I think most if not all of the above will be able to be manufactured. The comment wasn't about being self sufficient and maintaining our current lifestyle, it was about being a piece of civilisation that survived an all out world war.