Yup. Zero-g introduces absurd amounts of challenges, only showing just how much everything we've learned over past couple thousand years is dependent on living at the bottom of a gravity well.

For those curious about asteroid mining per se, there are plenty of ideas being prototyped right now - including the more obvious ones like two-part drills spinning in opposite direction, and the less obvious ones like using concentrated sunlight to heat up the asteroid and collecting the matter that outgasses from the hot spot.