Marrying asteroid defense and asteroid mining

--- In spacesettlers@yahoogroups.com, cygonaut
>
> Ion engines are slow to start and build up their speed gradually
during
> their trips but can achieve remarkable speed.
>
> But they're not for quick moving about, stopping as we might like
or as is
> usually needed, maneuvering the vehicles, or even course changes.
With an
> ion, small rockets are still needed for most things and maybe one
or more
> good sized ones just to start out well or just in case we need to
move
> quickly and more urgently.
>
> Ions are best for long distance movement.
>
> George
> cygo.com