CALUMET COUNTY, Wis. (WTAQ) - The cause of an area dumpster fire which killed firefighter Steven Koeser last December has been classified as undetermined.
A newly released report from the state says the 33-year-old died as a result of multiple traumatic injuries outside Bremer Manufacturing in St. Anna. It also states that Koeser was found about 60-feet from his position at the time of the explosion.
The report shows the blast, which also injured 8 others, was the result of firefighters applying water and fire suppressant foam to materials inside the dumpster. It also determines while the cause is undetermined, officials believe the fire was not set intentionally.
St. Anna Fire Department Captain Adam Schuh, who was on scene when the explosion happened, was interviewed for the report:
"Capt. Schuh stated that he was inside the pumper and as he was increasing the foam concentration, the explosion occurred.
Capt. Schuh stated that when he arrived at the scene he observed "very little" flame within the dumpster. He stated that the longer they were on the scene, the higher the flames became and the fire began to produce heavy smoke. Capt. Schuh also stated that after the foam was being applied he observed that the flames became a bluish green color," according to the report.