A violent downpour of rubbly pumice mixed with incandescent rocks capable ... material like this fell," Mastrolorenzo explained, dropping two transparent bags of volcanic material on the desk ...

Pumice stone is a lightweight, volcanic rock formed when lava cools quickly ... They can also be used on areas like elbows ...

The agency’s also warning the public about hot pumice, ash, and Pele’s hair ... as Kilauea releases more sulfur dioxide and other volcanic fumes into the air. Light southeasterly winds will ...

Pumice stones spewed from an undersea volcano ... said Nov. 16 that its latest computer simulation indicated that the floating volcanic stones will first pass along the coasts of the Tokai and ...