21. As a result of this specialization, tank cars have generally been " one-way " cars. 22. The earlier passenger cars and box cars were retained, while the tank cars were discontinued. 23. Vinegar is now moved in ordinary tank cars lined with glass, plastic, or alloy steel. 24. During the derailment, four of the tank cars sustained multiple punctures and released their products. 25. TransUnion was formed as a holding company in 1968 to hold Union Tank Car Company. 26. Other large types of rollingstock were 21 000 gallon tank cars and 75 foot boxcars. 27. The crowd swelled so large that eight tank cars of drinking water were soon empty. 28. By the late 1990s, the last customer in New Brunswick, Squibb, stopped getting tank cars . 29. The depot received and stored the tank cars sent from the company's refinery in Dock Sud. 30. Another tank car ruptured releasing of hydrochloric acid.
