Carol Stewart, associate professor of the College of Health, Massey University, said: "Ashfall on the ground is not hazardous to breathing, but fine ash in the ... are trying to fly in clean ...

The volcano spewed a 9km (6.2 miles) ash column into the sky over the weekend, one week after a major eruption killed 10 people Several airlines have cancelled flights to and from Bali due to ...

Once the active eruption stops, ash starts to settle. But ash that reaches the ground can easily be lofted ... The eruption ...

including fly ash and bottom ash, in in-ground impoundments. These coal ash wastes — which are a toxic slurry left over after coal is burned — contain a host of heavy metals and contaminants ...