Science: Ice for Fire

"If we could get 50 gallons of water to a forest fire immediately after we spot it from a watchtower, that would be much more effective than tons of water after the fire has had a two-or three-hour start."

This thought occurred to Acting Superintendent A. B. Everts of the Cleveland National Forest in Southern California. But 50 gallons of water weigh 416 Ib. Hauling that much weight, plus a pump and its power unit, over a mountain trail is slow work. Gasoline pumps are convenient but heavy. Forester Everts hit upon a source of power that is light and cheap as...

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