| http://www.w3.org/ns/prov#value | - ency, said Sunday.???Anytime you have an explosion that rips through a mine and travels 5,000 feet and is felt on the surface, that is almost assuredly a secondary coal dust explosion if not a primary dust explosion,??? Oppegard said.Even more troubling, according to Oppegard, is that MSHA had cited the mine 47 times since April 2001 for not cleaning up coal dust and other combustible material, n
|
