Had a bit of a rough initial experience. I played through a round, and ended up getting lost in space somewhere, never to return to the asteroid space. 
Another aspect was confusion around the progress bar. I understood what the effectiveness and instability were, but I didn't get what progress was about.
After getting back to it, I managed to get somewhere this time! I must say, having camera controls would be nice, sometimes when I rotated the ship my controls would reverse! Also you can aim the laser away from the asteroid you are hitting and there's no reprocussion, which is kind of weird. Finally I will say though, the laser graphics are cool, and the asteroids look quite good. Basically, most of the graphics are quite good (especially that fresnel effect, great way of indicating the lock-on mechanic!) I also like the idea of mining simulator, but I didn't particularly feel at risk. Sorry if the review sounds a bit harsh, I guess I just ended up running into quite a few problems. Still, nice work!