This is fantastic evidence from scientists in India at the ISRO labs. The detail of this massive pyramid is fantastic and you can see two other rectangle structures on it. The asteroid is probably not for mining as much as used as a tiny space station.
An asteroid that size and a structure that size is a bit out of proportion...so this cannot be a mining facility. This massive structure is meant to be hidden on this small asteroid, so it is probably monitoring planets as it passes them without any primitive life discovering them...however, India was on top of it and caught it quickly. Awesome work India.