Perhaps not in the legal sense, but this speaks of moral responsibility:
Massey Energy's sprawling Upper Big Branch mine has a history of violations involving the ventilation of combustible methane gas.Click here for full CBC News report
Last year, the mine faced 458 safety violation citations, and 50 of those were classified as "unwarrantable failures to comply," according to the Mine Safety and Health Administration.
At the time of Monday's explosion, the mine was facing more than $150,000 US in fines for pending safety violation charges.
In 2006, Massey Energy was fined $1.5 million for 25 violations that inspectors concluded contributed to the deaths of two miners who were trapped in a fire in another West Virginia mine owned by the company.