The grain elevator owned by Andersen Farms that exploded in late May is not subject to enforcement by the Occupational Safety and Health Administration, reports the Sioux City Journal.
The Journal also found that no other government agency is probing the incident, which led to the death of an employee.
OSHA investigators arrived on site following the explosion to survey the scene but dropped its investigation in late June after learning the privately-owned elevator had too few employees to fall within its jurisdiction.
The Andersen Farms grain elevator has since been torn down, and local and state fire officials are no longer investigating a cause.
Read the full report here.
