Two people died after a massive explosion Friday which leveled a warehouse in Houston, damaging nearby buildings and homes. Authorities said the shock wave was felt by residents many miles away.
The explosion happened about 4:30 a.m. inside a building at Watson Grinding and Manufacturing. The company makes valves and provides thermal-spray coatings for equipment in various industries, authorities said. The building was reduced to burning rubble and debris, and some of the surrounding buildings suffered heavy damage.
Police Chief Art Acevedo confirmed the fatalities Friday. He said authorities don't believe the explosion was intentional though a criminal investigation is underway.
Acevedo asked residents who live nearby to search their homes and neighborhoods for any debris – including body parts – and to contact police if they find anything that could aid the investigation.
Houston Fire Chief Samuel Pena said hazardous materials crews have secured the valve on a 2,000-gallon tank of propylene that had been leaking. Propylene is a colorless gas used to produce chemicals in plastics, synthetic rubber and gasoline. It is highly flammable. People exposed to propylene can become dizzy and light-headed, and the gas can also cause liver damage.
Nearby homes sustained significant damage. Some were knocked off their foundations.
Danny Wilson, 63, who lives less than a mile from the site, said he was sleeping when his wife woke him up.
"She heard a big noise and the (grandchildren) were running out of their rooms," Wilson said. "She said it was some kind of explosion or somebody was trying to get in." Wilson said he first checked inside his home to make sure nobody had broken in and then he went outside and talked to neighbors to find out what was going on and to check for any damage.
"I didn't notice any broken glass and I looked at the back window and it was shattered big time," Wilson said.
He said the blast also damaged the front windows of his house.
"Everybody seems to be okay now. That's the main thing," Wilson said.
Mark Brady, who lives near the site, told TV station KPRC that the explosion "knocked us all out of bed."
"It busted out every window in our house. It busted everybody's garage door in around here... and closer toward the explosion over here, it busted people's roofs in and walls in," he said
The blast shook other buildings, with reports on Twitter of a boom felt across the city. Pena said there were no reports of hazardous air quality, based on monitoring done by a hazardous materials team.
A phone number for Watson Grinding was out of service when called by a reporter from The Associated Press (AP) Friday morning. The family-owned business manufactures valves and provides thermal-spray coatings for equipment used in the chemical, mining, petroleum and aerospace industries, among others, according to its website.
Houston police tweeted that officers were blocking off streets, but no evacuation was ordered. Harris County Sheriff Ed Gonzalez said first responders checked on residents of nearby homes.
Several people told television station KHOU that the explosion was so loud, they thought a bomb had gone off or that a vehicle had crashed into their homes.
This part of Texas is home to the highest concentration of oil refineries in the nation and has experienced a series of explosions in recent years. Last July, an explosion at an ExxonMobil refinery in Baytown, east of Houston, left more than a dozen people with minor injuries and put nearby residents under a shelter-in-place advisory for three hours.
In December, two blasts in the coastal city of Port Neches shattered windows and ripped the doors off from nearby homes.
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