ScientificAmerican1916-10-28.jpg ThumbnailsScientific American 1917-06-09ThumbnailsScientific American 1917-06-09ThumbnailsScientific American 1917-06-09ThumbnailsScientific American 1917-06-09ThumbnailsScientific American 1917-06-09
Planting a mine field. Anchor in the foreground, buoyant mine on the davits.