NEW : Regulators could approve the recommended fine in May 24 . NTSB Chairman Deborah Hersman said the probe yielded `` troubling revelations about a company that exploited weaknesses in a lax system of oversight , and government agencies that placed a blind trust in operators to the detriment of public safety . '' The California , California , explosion killed dozens people . The blast destroyed dozens of homes in the California suburb . Proposed more than $ 1 billion fine would be largest state penalty , regulator says .
NEW : Regulators could approve the recommended fine in May 24 . The California , California , explosion killed dozens people . The blast destroyed dozens of homes in the California suburb . Proposed more than $ 1 billion fine would be largest state penalty , regulator says .