Zehl & Associates firm founder Ryan Zehl spoke with Houston’s CBS station KHOU 11 about the potential harm and employee concerns following the chemical leak at the PEMEX oil refinery.

“I think a lot of people are concerned about returning to work, if that plant is going to be safe for them, what type of symptoms they may develop over the next couple days and then, yes, that in the future, what if these exposures become carcinogenic and develop into cancers?” Mr. Zehl told CBS.