Pipeline transport oil-contaminated sediment and debris from the Kalamazoo River system. However, oil was still being found in affected waters in October 2012. Fossil fuels can be transported by pipeline, rail, truck, or ship, though natural gas requires compression or liquification to make vehicle transport economical. For transport of crude oil via these four modes, various reports rank pipelines as proportionately causing less human death and property damage than rail and truck, spilling less oil than truck, and having more environmental impact than truck or rail (mostly due to impact on habitat; ship transport impacts marine habitat to a large degree). Pipelines
Pipeline transport not used for economic and ecological reasons. The typical annual loss of thermal energy through distribution is around 10%, as seen in Norway's district heating network. District heating pipelines are normally installed underground, with some exceptions. Within the system, heat storage may be installed to even out peak load demands. Heat is transferred into the central heating of the dwellings through heat exchangers at heat substations, without mixing of the fluids in either system. Bars in the Veltins-Arena, a major football ground in Gelsenkirchen, Germany, are interconnected by a long beer pipeline. In Randers city in Denmark, the so-called Thor