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Good points on Mideast oil, Doug. One thing most Americans also fail to realize is that crude oil is refined into rather distinct fractions with limited options for each. With gasoline production being the driver for crude refining, the fractions available for plastics production are generally in surplus. Catalytic cracking and recombination can tweak these ratios, but it has it's limit$. This is one reason for the proliferation of plastic products and the somewhat de-linked relationship between crude oil costs and resin pricing. For an overview of the refining process, visit http://science.howstuffworks.com/oil-refining1.htm <http://articles.roshd.ir/articles_folder/BASEscience/chemistry/Howstuff works%20How%20Oil%20Refining%20Works.htm> Jay Donnaway Solid Waste Policy Analyst Oregon Dept of Environmental Quality Land Quality Division 811 SW Sixth Avenue Portland, OR 97204-1390 (503)229-6046 Fax: 229-6977 donnaway.jay@no.address http://www.deq.state.or.us <http://www.deq.state.or.us/> |
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