Front:
CONTACT MINES
READY TO BE LAID
JL
Back:
PUBLISHED BY AMERICAN COLORTYPE CO., CHICAGO
No, 12.
$.2
ہاں2
تابهای
Each one of these mines contains 100 pounds
of gun cotton, and when laid explodes imme-
diately when anything comes in contact with it,
like the keel or side of a ship. Here you see a
crew from the U. S. mine planter, General E. O.
S. Ord, after mine-planting practice off Fort Du
Pont. While not especially new, this type of
marine mine has played an important part in
the great European struggle, and has sent many
ships to the bottom. These mines are laid in
the entrance of harbors to prevent the entrance
of hostile ships.
PHOTO INTERNATIONAL FILM SERVICE, INC.
Two Cents
