This takes some stones. Massey Energy, whose mine explosion in West Virginia in April killed 29 people, has decided to sue the Mine Safety and Health Administration, along with three of its regulators, over MSHA’s denial of Massey’s preferred mine ventilation plans.

Massey’s lawsuit says that federal law didn’t allow the company to challenge MSHA’s requirements, saying such a restriction “violated its constitutional rights,” according to the Wall Street Journal.