Crude oil is a mixture of hydrocarbons that exists as a liquid in underground geologic formations and remains a liquid when brought to the surface. Petroleum products are produced from the processing of crude oil and other liquids at petroleum refineries, from the extraction of liquid hydrocarbons at natural gas processing plants, and from the
Read MoreThe importance of oil as a global energy source is difficult to dramatize too much. The growth of energy production during the 20th century was unprecedented, and the increase in oil production has been by far the largest contributor to that growth. For the 21st century, an immense and intricate value chain moved approximately 100
Read MoreDo you need Coltan? Get in touch with our suppliers What is the coltan? “Coltan is not really any established mineral. It is a term that is not used in scientific language and that responds to the contraction of two well-known minerals: columbite, niobium oxide with iron and manganese (Fe, Mn), Nb2O6, and tantalite, tantalum
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