Originally Posted by Nozza x360a
You've put the 'Fire In The Hole' achievement in the wrong order/place. It needs to be put BEFORE 'Smells Like Team Spirit'. Otherwise you'll complete the Mine section and not be able to get it until another playthrough.
Glad I scanned ahead before I completed that area. I'd also mention that it needs to be done and achieved before you deliver the 3rd cart. After that, the miner doesn't through anymore dynamite.
You have to do that section 5 times... it really doesn't matter much if you miss it.