
I figure that it ought to be possible to make a script to build a mine on all asteroids in the sector, and then destroy all mines in a sector whose name starts with 'Your' (or whatever).
The main reason I _want_ to be able to clear sectors of mines is that I'm thinking of using the X3 -> X3 save converter* to restart my game and one of the problems with that is that when in creates all your mines it leaves the original asteroids behind in the sector - so everything will suddenly get rather crowded and messy.
* Hopefully it works with AP -> AP.