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B 3/1 S 3/1 served as the southernmost base end and spotting station for Battery Const. #403. It is a one room concrete structure with a wingwall type entrance. Only the west side of the station is covered with earth, leaving a 15 foot high expanse of concrete exposed on the north and east sides. |
Form 2 | May 1, 1944 |
Plan    (with slight inaccuracies) | September 1, 1945 |
Detail map of area. | October 1944 |