THE WORLD'S ADVANCE 



173 



PROVING THE EFFICACY OF MILITARY MINES 



One of the most spectacular 

 entertainments of the Pan- 

 ama-Pacific Exposition was 

 the recent blowing up of a 

 "battleship" built of papier 

 mache and canvas. In order 

 to demonstrate the effect- 

 iveness of mines in defen- 

 sive naval operations, 

 mines were planted in the 

 waters adjoining the Ex- 

 position Grounds, under the 

 supervision of Colonel S. 

 M. Foote, Commander of 

 the United States Pacific 

 Coast Defense, and Major 

 H. H. Whitney. The bat- 

 tleship "Zone" was con- 

 structed of papier mache 

 and canvas on the hulk of 

 the old Southern Pacific 

 ferry boat "Amador." The 

 ferry boat was launched in 

 1869 and kept in service 

 until 1914, when it was 

 condemned. One of the 

 views shows the "battle- 

 ship" before it was blown 

 up, while the other was 

 photographed at the mo- 

 ment it struck a mine. 



Photos. Copyrighted International News Service. 



