Liquification, the process of making or becoming liquid (a more general term, sometimes used in place of liquefaction in the energy industry, and food processing.)
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These liquefaction zones are found as either Seismic Hazard Zones mapped pursuant to the Seismic Hazard Mapping Act or in the Seismic Safety Element of the General Plan for many cities and counties as well as on Seismic Hazard Maps.
Liquefaction is a soil phenomenon that can occur during intense earthquake shaking under certain conditions.
The types of soils that are most susceptible to liquefaction are loose, water saturated, fine-grained sands and silty sands that lie within 50 feet of the ground surface.
Coal liquefaction is a process that converts COAL from a solid state into liquid fuels, usually to provide substitutes for petroleum products.
Coal liquefaction processes were first developed in the early part of the 20th century but later application was hindered by the relatively low price and wide availability of crude oil and natural gas.
In Canada, coal liquefaction research was conducted during the 1980s and early 1990s by the ALBERTA RESEARCH COUNCIL in Devon, Alberta, and the CANMET Energy Technology Centre (CETC) in Ottawa, the energy science and technology arm of Natural Resources Canada.