Four workers were killed by a lethal dose of methyl mercaptan gas in November 2014. OSHA has cited the company for 11 safety violations and identified scores of safety upgrades the company must undertake to prevent future accidents at its manufacturing building. The company employs 313 workers who manufacture crop protection materials and chemicals there. The fatal incident occurred as one worker was overwhelmed when methyl mercaptan gas was unexpectedly released when she opened a drain on a methyl mercaptan vent line. Two co-workers who came to her aid were also overcome. None of the three wore protective respirators. A fourth co-worker — the brother of one of the fallen men — attempted a rescue, but was unsuccessful. All four people died in the building. The company was cited for one repeat, nine serious and one other than serious OSHA violations. The repeat violation was assessed for not training employees on using the building’s ventilation system and other safety procedures, such as how to respond if the fans stopped working. In July 2010, the company was cited for a similar violation in a fatality involving Phosgene gas. Here is a breakdown of the citations…