Heavy Time — C.J. Cherryh

Two asteroid miners find a dead, drifting ship--but its pilot, Paul Dekker, is alive, insane from shock, and screaming... screaming dues to a mystery that no one wants solved ...

WHAT IS MAMA HIDING?

Paul Dekker, a kid with a dream, wakes to a nightmare His ship is stolen, his future destroyed, his beautiful partner missing, his memory gone. The ASTEX mining monopoly, Mama, accuses him of being negligent, crazy, and foolish, as well as a cold-blooded murderer. And only a renegade miner, Morris Bird, will help Paul learn the truth.

Because somewhere in Dekker's mind lies a dark secret that can change the fate of worlds.