Earlier quoted context omitted.
Have you ever been to Australia where iron ore is less than 1 meter below ground?
Is that really true?
https://en.wikipedia.org/wiki/Channel-iron_deposits#Economic... - the 'little or no need for drilling and blasting' suggests is iron on the surface, the Pilbara Banded Iron formations can be something like 300m thick or something silly - I'd be surprised if it didn't outcrop. The issue is more which parts are most economic to mine, which is a question of depth vs grade.