I don't know and I'm not going to do a multi-hour deep dive and statistical analysis because you're demanding pages of proof after I gave you a number of examples. But maybe this article answers your question.
A USA TODAY analysis of federal data found that railway incidents requiring nearby residents to flee possible explosions or toxic fumes are rare.
www.usatoday.com
But here are a few more articles that I'm sure you'll claim don't answer your questions and requirements of proof.
‘This could resolve itself in two days, but it could get worse before it gets better,’ a Cal Fire division chief said.
www.pressenterprise.com
A train carrying hazardous chemicals went off the tracks in Jefferson County, GA on Sunday night. Potentially threatening materials leaked from the train cars as a product of the accident.
www.wjbf.com
Dozens of residents of a small Oklahoma city were temporarily evacuated early on June 13 after a train derailed and spilled a hazardous chemical,
www.insurancejournal.com
On Thursday morning, officials tell WGNO-TV that the fog had delayed the clean-up process but they are getting the product neutralized and getting the cars upright.
www.wjtv.com
Not super often and trains are actually a pretty safe way to move hazardous chemicals. But it could be safer by implementing 20th century safety measures.