Refining companies pay more than ten dollars a kilogram for computer boards.

VOA: special.2010.11.01

The end product is then often enriched, to replace a portion of the nutrients lost during the refining process.

VOA: standard.2010.06.25

Refining it involves removing the outer layers, including the husk,bran and germ, leaving the inner white kernel.

VOA: standard.2010.06.25

The U.S.Department of Energy gave the Vehicle Research Institute a $500,000 grant to improve the biogas refining process and then demonstrate whether the fuel can be cost-competitive in cars.

VOA: standard.2010.02.23

Although a major oil producer, Iran must import most of its gasoline because of a lack of refining capacity, creating what U.S.lawmakers have long seen as a crucial point of leverage with Tehran over its nuclear program.

VOA: standard.2009.10.28

Like the House version,the Senate measure would amend the 1996 Iran Sanctions Act to allow the president to sanction foreign companies involved in enabling the shipment of gasoline and other refined petroleum products to Iran, or helping to maintain its existing refining capacity.

VOA: standard.2009.04.28