"A Pass to Poison"

"How the state of Texas allows industrial facilities to repeatedly spew unauthorized air pollution — with few consequences"

"DEER PARK — For more than two decades, Dennis Gallagher was a proud Shell employee.

During his 22 years working at the energy juggernaut’s sprawling, 80-year-old complex in this Refinery Row suburb of Houston, he learned to oversee different parts of the massive chemical plant and refinery. The facilities manufacture not only oil but a variety of hazardous chemicals that — if mishandled — could easily explode and level the 2,300-acre compound, located less than a mile from residential neighborhoods.

Until two years ago, the Michigan native’s only truly bad day at work was in 1997, when a gas compressor exploded and he was “picked up like a leaf” and blown back 25 feet. Then came what should have been a quiet Sunday in August 2015, when everything went wrong."

Kiah Collier reports for the Texas Tribune with data analysis by Ryan Murphy July 17, 2017.