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Berkeley Pit plan aims to stop repeat of Montana mass bird deaths
HELENA, Mont. -- Federal officials say they have approved new measures meant to prevent a repeat of last fall’s mass bird deaths in a contaminated former open-pit mine in Montana.
The plan includes adding noise-making cannons, radar and laser systems, remote-controlled boats and aircraft, decoys and strobe lights to keep migrating birds out of the Berkeley Pit in Butte.
Nikia Greene of the U.S. Environmental Protection Agency says the full proposal was approved on Friday.
Last November, between 3,000 and 4,000 migrating snow geese died when they sought refuge in the pit filled with 50 billion gallons of toxic, metal-laden water.
http://www.cbsnews.com/news/berkeley-pit-plan-stop-montana-mass-bird-deaths/
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Butte mine officials: Snow geese deaths number into the thousands