diff --git a/info/build.t b/info/build.t
index 28a40e4b..12bef2b2 100644
--- a/info/build.t
+++ b/info/build.t
@@ -169,8 +169,6 @@ supporting sector if it is of a type that can build bridges.  Bridge
 heads and bridge towers are.  With option EASY_BRIDGES, all land
 sectors are as well.
 .s1
-When a bridge falls, all mines in the sector are cleared.
-.s1
 Ships can navigate under bridge spans that are at least 60% efficient.
 .s1
 .SA "Unit-types, Ship-types, Plane-types, Nuke-types, Bridges, show, upgrade, Maintenance, Ships, Planes, LandUnits, Nukes, Sectors"
diff --git a/info/mine.t b/info/mine.t
index 7f4c7894..4524269a 100644
--- a/info/mine.t
+++ b/info/mine.t
@@ -30,7 +30,7 @@ thus, a ship may safely drop mines in a sector and then move out.
 On the other hand, the mines know no allegiance,
 so moving back into a mined sector is foolish at best.
 .s1
-Mines in the same sector as a bridge that collapses are cleared.
+Building a bridge clears all mines there.
 .s1
 You cannot drop sea mines into a harbor, only land mines.
 .s1
diff --git a/info/navigate.t b/info/navigate.t
index 54e5b2a7..c8db669e 100644
--- a/info/navigate.t
+++ b/info/navigate.t
@@ -72,10 +72,10 @@ specify a flagship.
 The \*Qdrop\*U command will drop mines using ships
 with mine capability.
 You can specify the ship number or fleet or groups of ships
-and the number of land mines on the same line: \*Qd 12/13 10\*U.
+and the number of sea mines on the same line: \*Qd 12/13 10\*U.
 An omitted unit number defaults to the flagship,
-for example \*Qd 10\*U drops ten land mines from the flagship.
-If you omit the number of land mines as well, the flagship will drop one
+for example \*Qd 10\*U drops ten sea mines from the flagship.
+If you omit the number of sea mines as well, the flagship will drop one
 mine.
 .s1
 The \*Qsweep\*U command will have the minesweepers in the navigating
diff --git a/info/sweep.t b/info/sweep.t
index 8daf3a71..089edb1f 100644
--- a/info/sweep.t
+++ b/info/sweep.t
@@ -4,7 +4,7 @@
 .SY "sweep <PLANES> <ESCORTS> <SECT> route|destination"
 The \*Qsweep\*U command is identical to the recon command, except
 that if you use planes capable of minesweeping, they will sweep
-mines from sectors along their route.
+sea mines from sectors along their route.
 .s1
 <PLANES> represents a list of planes which are to be performing the
 intelligence gathering operation.
@@ -48,7 +48,7 @@ sonar has a range dependent on acc, and a chance of finding a sub of
 The sub being sonared may detect the sonar ping.
 .s1
 Planes with the sweep ability will
-automatically attempt to sweep mines in sea or harbor sectors they overfly.
+automatically attempt to sweep sea mines in sea sectors they overfly.
 Their chance of sweeping is (100-acc), and they can only sweep 1 mine per
 overflight of the sector.
 .s1