Guides Liquid Cargo Tanks Guide A helpful quick reference sheet about the various liquid cargo tanks and how they’re classified by the DOT. Download Guide Liquid Containers - Low Pressure Tank Car - Low Pressure Intermodal A helpful quick reference sheet about the various containers, including liquid, low pressure, and intermodal. Download Guide Chemical & Physical Properties Chart Download this chart to use as a quick reference in order to remember key temperature points for chemicals and physical substances. Download Chart