Particles in dust from abandoned uranium mines may be damaging to the lungs and heart, according to new research from the University of New Mexico (UNM) SRP Center. The researchers showed that exposure to particles less than 10 micrometers in diameter (PM10) from an old uranium mine, compared to PM10 from an area not impacted by a mine, led to increased pulmonary and cardiac toxicity in mice, as well as higher levels of inflammation and oxidative stress in cells.