. Electric railway review . Improvements at Key West. Fla.—Subgrade Excavation in SolidCoral Rock. boiler purposes except by distillation, which was too expen-sive, the high price of coal, and the well-established fact thatno method of bonding known would for even a few monthsretain a contact between the copper and the steel, makingthe return current of the railway system a ground returnin reality. The ownership of the company changed in 1903 and an 526 ELECTRIC RAILWAY REVIEW September, 1906. attempt was then made to overcome the natural obstaclesto economical operation and gradually to devel
. Electric railway review . Improvements at Key West. Fla.—Subgrade Excavation in SolidCoral Rock. boiler purposes except by distillation, which was too expen-sive, the high price of coal, and the well-established fact thatno method of bonding known would for even a few monthsretain a contact between the copper and the steel, makingthe return current of the railway system a ground returnin reality. The ownership of the company changed in 1903 and an 526 ELECTRIC RAILWAY REVIEW September, 1906. attempt was then made to overcome the natural obstaclesto economical operation and gradually to develop the prop-erty for the business in hand. Engine the price of coal was so high and decent boiler water. Improvements at Key West, Fla.—Using Churn Drills In ExtendedOrder. was unobtainable, it was decided, after a thorough investi-gation and test, and with satisfactory guarantees on the partof the makers, to install the Diesel oil engines, and contractswere made with the American Diesel Engine Company, ofNew York, for Diesel engines. Two 75-brake-horsepowersingle-cylinder engines were first installed for the railroadload, and later two 225-brake-horsepower triple-cylinder en-gines were installed for the lighting load, and a third unitof 225-brake-horsepower is now under contract. This is thefirst plant in the United States to use Diesel engines for rail-way and lighting loads. For purely local and temporary operative conditionsthese units were belted to a modern main shaft completelyequipped with friction clutches and pulleys to admit thegreatest possible flexibility of operation. The company,meantime, had acquired the property and business of theKey West Light & Power Company, wh
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