Pipeline transport transport cost about $10 to $15 per barrel. Trucking has even higher costs due to the additional labor required; employment on completed pipelines represents only "1% of that of the trucking industry." In the United States, 70% of crude oil and petroleum products are shipped by pipeline. (23% are by ship, 4% by truck, and 3% by rail) In Canada for natural gas and petroleum products, 97% are shipped by pipeline. Natural gas (and similar gaseous fuels) are lightly pressurized into liquids knows as Natural Gas Liquids (NGLs). Small NGL processing facilities can be located in oil fields so the
CLH Pipeline System the WW2 cross-Pennine pipeline was found to be badly corroded and in the 1950s a new pipeline was built from the Stanlow area to the Humber. New storage depots were built on this pipeline and a third new import facility was constructed on the Humber. The first commercial usage of the system was immediately after the war to supply a depot on the River Severn from Avonmouth. In the early 1950s some aviation fuel was pumped from Avonmouth to a depot on the Thames to supply Heathrow airport by road tanker from there. Esso also used the network to pump