3 ms·
Sure, if you have a billion years to wait for it to all run through the rock cycle again.
by mikewave 5y ago
Sure, if you have a billion years to wait for it to all run through the rock cycle again.
- ncmncm 5y agoThe process that concentrated the iron ore we rely on does not operate anymore. Fortunately, despite millions of tons of production every year, we are nowhere near using up the ore.