Efforts to Reduce Air Pollution Get Caught in a Haze

Air quality  and visibility in northern Minnesota is impaired by gases released as a result of taconite mining operations. As the state develops a plan to address this issue, mining companies claim the regulations will reduce or even halt production. Others believe the rules will be too weak, and won’t effectively reduce the haze that currently looms over the Boundary Waters.

Minnesota regulators put off vote on haze reduction

Minnesota’s proposed plan would require the iron mining industry to use “good combustion practices” at six operations where iron ore is processed into taconite pellets.

That was criticized as too lenient by critics, including the National Parks Conservation Association. They advocate requiring taconite plants to install new low-nitrogen oxide burners, a relatively new technology.

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