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-Moving a ship through a sector that has been mined
-introduces a chance of mines/(mines + 50) of hitting a mine.
+Moving a ship through a sector that has been mined risks hitting a
+mine (see \*Qinfo Hitchance\*U).
Minesweeps can remove up to five mines per pass through a
sector (indicated by the message \*QSweep...\*U).
Minesweeps also take 1/2 normal damage from mines.