Arsenic in Arctic Ice Traced to Century-Old Montana Copper Mine
Researchers traced arsenic in Arctic ice to a Montana smelter and estimated it emitted about 30 tons a day before pollution controls began.
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Arsenic in Arctic ice traced to century-old Montana copper mine
A huge mine complex near Butte, Montana, was emitting “vast” amounts of air pollution into the atmosphere around 100 years ago.
Ice Core Records Uncover Widespread Air Pollution From Early 20th Century Copper Production
About a century ago, the Anaconda Copper Mine complex near Butte, Montana was emitting vast amounts of air pollution into the atmosphere. As small particles of arsenic and other heavy metals were carried by winds over the Arctic, storms eventually helped pull them to the ground, where they joined layers of history embedded in the ice. Now, DRI’s Ice Core Lab has analyzed these natural archives to help us better understand the scope of just how m…
Ice cores record the secrets of the Earth, even the dirtiest ones. Some cylindrical sections of ice extracted from the Arctic contain high levels of arsenic, lead and other heavy metals that were circulating in the atmosphere of our planet in the late 19th and early 20th centuries. These pollutants, which have caused [...]
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