Commercial natural gas has an energy content of about 1000 Btu per cubic foot while vaporized propane has an energy content of about 2500 Btu per cubic foot. Both come from natural gas. During processing, the heavier (and higher Btu content) molecules are stripped out of the gas that comes from the gas wells and sold separately at higher prices. What remains (mostly methane) is sold as natural gas.
The decision of how much of the heavier molecules are removed from the gas stream is an economic one. The processors of the gas will make little effort to strip the heavier molecules from the gas unless they can make more profit by doing so.
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Today's Featured Article - Tractor Profile: Oliver 70 Row Crop - by Staff. The Oliver 70 was part of the "Fleetline Series" and was manufacturered from 1937 to 1948. The row-crop configuration could have either dual or single front wheels. The Oliver 70 was also offered in the standard, orchard and industrial configurations. The tractors were sold in Canada. An early advertisement states "Power when you want it - power when you need it - power to help put in crops when field conditions are right and time and help are limited. That's the power you'll find in an Oliv
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