An Odessa, Texas company has been cited for six workplace violations in the deaths of three workers in March, 2015.

An oil rig inferno killed family members Arturo Martinez Sr., Arturo Martinez Jr. and Rogelio Salgado in as they worked to install a blowout preventer, which seals, controls and monitors a rig.

An OSHA investigation into the fire determined that the company failed to prevent contact between an ignition source and flammable liquids and gases, and did not ensure workers wore personal hydrogen sulfide monitors and flame-retardant clothing.

Parsley Energy in Midland owned the well and contracted Mason to install a blowout preventer.

OSHA has proposed fines totaling $50,400 for the citations*.

"This is a heartbreaking and senseless case," said Elizabeth Linda Routh, OSHA's area director in Lubbock. "Though the fines for the serious violations are the maximum amount allowed by law, no dollar amount can ease the loss felt by family and friends."

An oil and gas well servicing company, Mason Well employs 120 workers. It has 15 business days from receipt of its citations and penalties to comply, request an informal conference with OSHA's area director, or contest the findings before the independent Occupational Safety and Health Review Commission.