The cave-in that killed an Idaho silver miner recently will be the subject of a federal investigation, according U.S. Labor Secretary Hilda Solis.

"My heartfelt condolences go out to the family, friends and co-workers of Larry Marek,” said Solis in a statement issued yesterday. “After more than a week of valiant round-the-clock efforts to locate him, rescue workers made the tragic discovery on Sunday that he had not survived the April 15th roof fall at Lucky Friday Mine.

"Dozens of federal, state and company officials, miners, mine rescue teams and emergency personnel deserve our utmost gratitude for their efforts to find Larry and return him to his family. I can assure you that the Mine Safety and Health Administration (MSHA), headed by Joseph Main, will conduct a thorough investigation into the cause of the roof collapse. Larry's family deserves to have answers, and we will continue our efforts to insist on safety and protection of all workers. No miner should ever have to die for a paycheck."

The accident occurred at the Hecla Mining Co.’s mine in northern Idaho. Hecla, based in Coeur d’Alene, Idaho, also plans an investigation. In a statement released Sunday, the company said, “Words cannot express the deep sorrow we feel at the tragic loss of our friend, colleague and 30-year veteran of the mining industry. Our thoughts and prayers are with his family, loved ones and friends.”