21.   A catalyst is a substance used to speed up or increase the output of a chemical reaction.

22.   A finance official at Posco attributed the profit rise to higher prices and increased output.

23.   Achieving economies of scale figures prominently as a motivation, combining customers to increase output while cutting costs, often by eliminating redundant personnel.

24.   Bush said on Friday that gasoline prices were high because refineries, which administration officials said had been hobbled by environmental laws, could not increase output.

25.   But even if output is increased, motorists in the United States may not find much relief in gasoline prices.

26.   But most market experts remained skeptical, given that only Saudi Arabia, the United Arab Emirates and perhaps Iran now have the spare capacity to increase output.

27.   But much of it was based on getting dozens of small energy providers to either increase output or build new facilities.

28.   Changes in federal regulations that allow more competition among power plants are expected to increase the output of coal-burning plants in the midwest.

29.   Copper prices fell as rising stockpiles and increased mine output in Chile threaten to overload the market with unneeded metal.

30.   Companies boosted imports of raw materials as manufacturers increased output in March.