WASHINGTON AP – Federal mining officials on Wednesday asked prosecutors to decide whether criminal charges are warranted in the deaths of nine people in last year’s collapse of the Crandall Canyon mine in Utah.

The Mine Safety and Health Administration has been investigating two cave-ins in August 2007 at Crandall Canyon that killed six miners and three rescuers. MSHA already has fined Genwal Resources Inc., a subsidiary of Ohio-based Murray Energy Corp., $1.34 million for alleged violations that directly contributed to the deaths of six miners. Agapito Associates Inc., a Grand Junction, Colo., mining engineering consultant, was fined $220,000 for an allegedly faulty analysis of the mine’s design. They were the largest fines ever imposed on a U.S. coal mining operation.