Will this add a bunch of debris to the already crowded near earth space?
The acceleration of objects in near earth orbit is vastly greater than the particles from a mine. Space ships collaring with super fast particles in the orbit could spell disaster for the spacecraft.
Hopefully we find ways to make the rock impact negligible if we ever get to the stage of unable to leave orbit due to collisions with space particles (Not saying subatomic particles I just mean debris)
Put another way, if you had 1,000 tons of mass to spread around earth orbit it would be difficult to effectively block rockets from leaving. Try to do the same thing with random orbits and it’s even less of a concern.