A massive explosion in Campbell Industrial Park has killed one man. Three others were rushed to the hospital in stable condition. It happened at Phillips Services Corporation near the intersection of Komohana and Kauhi.

The explosion came from a tank that holds up to 9,500 gallons of oil and when it burst the oil was sent everywhere.

"It was a big ball of fire," said Randall Ikuta, Island Demolition, who was at the scene when the tank exploded.

One man, who may have been on top welding the tank, was thrown about 100 feet over a fence and into the neighboring property and landed in the back of a pickup truck. He passed away by the time paramedics arrived.

Three other men were hurt and rushed to the hospitals in stable condition. Worker standing 50 to 100 yards away say their hair was singed by the explosion.

"I was just here today, just to work on something. It's a one in a thousand, one in a million thing," said Ikuta.

"The tank and the people were in several different areas. That's what we're trying to figure out, where they were at the explosion," said Captain Terry Seelig, Honolulu Fire Department.

Phillips Services Corporation takes used oil and processes it to recycle.

Three of the men involved worked for private contractors, who were just there for the day. The fourth man worked for Bonded Materials Company which is located right next door.

The Hawaii Occupational Safety and Health department is investigating why it happened and to see if there were any issues with the equipment. The Honolulu Fire Department is trying to figure out how the tank exploded. The Honolulu Police Department is also looking into the explosion to determine if there was any negligence.

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