An Evergreen Helicopters Sikorsky S-61L (civil variant of the SH-3 Sea King) delivers 3,500 lbs of fertilizer in a broadcast module. This flight was part of what was the largest aerial application of fertilizer in the Washington and Oregon forests of Weyerhaeuser Co. The operation covered 200,000 acres. From Vertiflite, March/April 1974 (page 29).
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Sikorsky S-61L spreading fertilizer

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An Evergreen Helicopters Sikorsky S-61L (civil variant of the SH-3 Sea King) delivers 3,500 lbs of fertilizer in a broadcast module. This flight was part of what was the largest aerial application of fertilizer in the Washington and Oregon forests of Weyerhaeuser Co. The operation covered 200,000 acres. From Vertiflite, March/April 1974 (page 29).

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Added to Vertiflite Images and categorized in — 7 years ago

 

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