For the jetpack doubters (I was one too), someone posted this link on slashdot. Scroll down a bit and you’ll see a picture of a girl who snapped a picture on her phone of what is very clearly a guy in a jetpack of some kind. The theory is the miners use them to scout new locations to see if enough minerals are present to clear a road to them.

Aliens sounds more believable than that

Oh, it’s just miners with jetpacks… Wait, wtf?!

Not quite as fantastical as aliens, but miners with jetpacks sounds sci-fi as fuck.