'Hunting for uranium, copper, lead and other metals is made easier and quicker with a new electromagnetic detector developed by Newmont Mining Corp. and engineered by Philadelphia's Aero Service Corp. The detector consists of two coils mounted on fore and aft booms on a Sikorsky helicopter. The front coil transmits a tuned electrical signal as it flies over the survey area. The metals cause disturbances in the signal, which are picked up by the rear coil. The aircraft covers more terrain in a day than foot-slogging ground crews do in months.' Photo from: Temple University Libraries

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