The tank cars are full of sulfuric acid but are not leaking, according to the Contra Costa Hazardous Materials Team. The trains were on their way to ECO Services, a sulfuric acid supply company.

(WHDH) - At least 5,000 galls of sulfuric acid has leaked from a tank car at an industrial chemical manufacturer in Attleboro, triggering a Tier 2 HazMat response from the local fire department.

Many tank cars broke open, burned and exploded, sending toxic vapors over the town. More than 3,000 people were evacuated, some for weeks, and the derailment required monitoring of an eight-acre ...

One of the derailed tank cars, which held 20,000 gallons of hydrochloric acid, broke open during the Nov. 2 derailment near La. 642.

Two cars transporting sodium hydro sulfate, an acid salt, did not enter the water and initial air quality assessments indicate the chemical was not released from the cars, Montana Rail Link said ...

The NTSB highlighted the fact that some of the 17 tank cars carrying hazardous materials that derailed were DOT-111 tank cars that have demonstrated time and again that they are prone to rupturing ...

"One tank car appeared to have released about five gallons of hydrochloric acid onto the ground," UP spokesman Tim McMahan said. "UP hazardous materials emergency response personnel are responding ...