[thackney]

his train cars are involved in 3 bad accidents

Which three do you attribute to BNSF?

[realcleanguy]

All three Burlington Northern train crashes involving oil cars. Warren owns Burlington Northern. I’m not counting the other train crashes that Warren doesn’t outright own.
One in 2012, one in 2013 and one this year. Here is one of them I found quickly.

http://atomicinsights.com/burlington-northern-oil-train-explodes-and-burns-in-casselton-nd/

Following the DOT site on trains can keep you up to date on the dangers of train and oil

http://dot111.info/category/recent-derailments/

Here is one on Propane for Burlington Northern. Give me a little while and I can find the others. But there have been 3 in the Dakotas involving Burlington Northern in the last 3 years with oil cars.