Two congressional Democrats want the U.S. Labor Department to investigate how West Virginia law firm Jackson Kelly has handled black lung benefits cases for its coal industry clients.
Reps. George Miller of California and Joe Courtney of Connecticut cite an investigation of the federal program by the Center for Public Integrity and ABC.
Miller is ranking Democrat on the House committee that oversees the program.
The reports say Jackson Kelly withheld medical records that could have helped miners prove they have the disease.
Jackson Kelly has represented coal companies since the mid-1800s.
The company declined comment to the Charleston Daily Mail but says in court documents it has no duty to turn over certain information.
Jackson Kelly says its obligation is to prepare the best case for its clients.