The peacetime supply chain determines the possibilities of the wartime supply chain. You can't open a mine overnight, refineries are incredibly expensive and fi

The peacetime supply chain determines the possibilities of the wartime supply chain. You can't open a mine overnight, refineries are incredibly expensive and fiddly and require a lot of very specific knowledge, tool manufacturing capacity is incredibly difficult to bootstrap- you don't want to be like WWII Australia, digging up lathes out of junkyards.