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Airborne lead and arsenic content by particle size (MOUDI samples) observed at Hayden, Arizona, for a 96-h sample collected 1 km south-southeast from smelting operations with sampling starting on February 5, 2011; AF denotes after filter sample. The wind rose inset is from a co-located weather station, which shows that winds from the direction of the smelting activities (NNW) account for roughly 30% of prevailing winds during the sampling period.
