[Slick]

When moving into a sector, a ship/fleet will be engaged by all mines in that sector laid by empires that it doesn't have a Trade Alliance or better with. Therefore if a ship/fleet has minesweeping capability of 100, then it will sweep 100 mines (I think in the order in which they were laid) and will get hit by the remainder. The default maximum number of mines per sector per empire is 100. Therefore theoretically there could be up to 100 mines times the number of empires in the game in a given sector if all empires had peace treaties with all other empires and all laid 100 mines in the same sector.

Slick.