Six iron in one day, no big deal. Just hot girl things.

I hauled all of them myself. Some of the rocks may have been from the previous day but the vast majority were mined that day. I just mined until I reached the limit where I could still move and ran back to my burrow, rinse and repeat. It was 113 chunks in all, ~15 of which were huge (2 iron came from those iirc). So it took probably most of the day, but not really more than I usually spent mining before. It's definitely a lot more active, I had to run around a lot more and it didn't take very long to fill my inventory.