While talking about lethal gas release at a DuPont chemical plant last year, the United States Occupational Safety and Health Administration (OSHA) revealed on Thursday that the four workers of the plant died last year at the DuPont chemical plant because the chemical company did not provide safety training to its workers.

The agency of the United States Department of Labor stated that policies of the Wilmington headquartered company were also responsible for the death of four workers. David Michaels, Assistant Secretary of Labor for Occupational Safety and Health, said that last year, four workers of DuPont lost their lives and their families and friends lost their beloved ones just because the company did not have correct safety procedures.

Last year, on November 15, four workers of DuPont died due to release of methyl mercaptain inside a building at the LaPorte, Texas, chemical plant. A DuPont spokesman, Aaron Woods, said in a statement that the company has cooperated with the OSHA and other investigations by other federal agencies.

According to OSHA, DuPont has been cited for about eleven safety violations, which include a repeat violation for not providing training to its workers on use of the building's ventilation system. The violations could fine the company about $99,000 in total.

In 2014, DuPont had reported revenue of about $35 billion. Now, after announcement by OSHA, DuPont has just half month to reply to the citations. Usually, companies reduce their fines by showing that they have moderated the conditions that led to the accident.

Woods said that DuPont has made changes in the unit that leaked methyl mercaptain. He said, “We are conducting completely new process hazards analyses, acting on findings from our own investigation, and the unit will not restart until this work is complete”.