HOUSTON, Texas (KTRK) -- It's been a week since the deadly explosion at Watson Grinding and Manufacturing in northwest Houston, and officials believe the cause of the powerful blast was not the result ...

HOUSTON – An electrical spark ignited a propylene leak at a Spring Branch business last week and caused an explosion that damaged more than 400 surrounding buildings, officials said Friday.

So this is what caused it all? We saw a little bit of blue fire just forward of the vertical rudder, the upper rudder. It hung right to the top ridge,” he said. In a documentary being broadcast on ...