Dana Ferguson, a Labor Department lawyer, talks with Gina Jones (center), whose husband, Edward Dean Jones, was killed in the April 2010 Upper Big Branch Mine disaster. Ferguson also spoke to Judy Jones Petersen (right), his sister. Earlier Tuesday, families had been given details about MSHA's investigation.

Edward Dean Jones' twin brother, Gene Jones, 51, of Charleston, said he finds it particularly disturbing that MSHA officials say the explosion that killed 29 miners and severely injured two others could have been prevented.