High Quality Content by WIKIPEDIA articles! Evergreen International Aviation, Inc. is a global aviation services company based in McMinnville, Oregon. Founded as Evergreen Helicopters in 1960 by Delford M. Smith, Evergreen is primarily known for commercial helicopter operations in agricultural and forestry applications. Smith was a leading innovator in the commercial use of helicopters, and his company was the first to use helicopters for spraying fertilizer and herbicides, spreading seeds and fighting forest fires. Del Smith and maintenance supervisor Norman McGrew developed a helicopter spray system called the "PaceSpreader" which permitted accurate, fast delivery of granular agents over large areas. The PaceSreader allowed the helicopter to operate at relatively high speeds while still delivering the product evenly and with measured precision. In 1972 the company expanded into the use of heavy lift helicopters, acquring a number of Sikorsky S-61, known in Southeast Asia as the H-3...

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