U.S. Attorney Booth Goodwin says more criminal charges are soon expected as an investigation into the April 5, 2010 Upper Big Branch mine disaster continues. Goodwin's announcement came Wednesday at a meeting of a health and safety foundation created under a settlement Goodwin's office reached with Virginia-based Alpha Natural Resources. Former superintendent Gary May awaits sentencing on January 17th for conspiracy to defraud the federal government, while former security chief Hughie Stover is appealing his conviction for lying to investigators and ordering a subordinate to destroy documents during the investigation.