Helicopter sprays an EPA-approved herbicide
OKLAHOMA — A helicopter sprays an EPA-approved herbicide over an Interior Least Tern island along the McClellan-Kerr Arkansas River Navigation System; this is the first time a helicopter was used. In the past, the U.S. Army Corps of Engineers Tulsa District sprayed by boat, which was more time consuming, costly and less effective.

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Photo by: Nate Herring |  VIRIN: 120509-A-CE999-002.JPG