| http://www.w3.org/ns/prov#value | - More recently, strong demand for very large quantities of oxygen (so-called tonnage quantities) has been spurred by steady growth in chemical process operations, for instance, that rely on oxygen-blown gasification to convert coal, petroleum coke, biomass, municipal solid waste and other feedstocks into an intermediate synthesis gas, which can then be further processed to yield electricity, chemic
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