11.   This has led to price spikes for gasoline when a refinery has a problem.

12.   Traders are concerned now that refineries will have difficulty making enough heating oil to satisfy demand if the weather stays cold.

13.   When any large refinery has mechanical problems, gasoline prices immediately surge.

14.   Yancey also said there is no similar cap on the price of refined sugar, which meant that refineries would not have to pass on their savings to consumers.

15.   Also, there was talk that two refineries were having problems in the Midwest, a region that is traditionally tight in supplies.

16.   Ibrahim, the engineer, however, said the refinery has yet to receive equipment to minimize impact of pollution on the environment.

17.   One problem was that refineries had difficulties making a new blend of cleaner-burning gasoline mandated by the federal Environmental Protection Agency, the report said.

18.   The government refinery has pollution control devices, although Mehta says it still releases harmful pollutants.

19.   The refinery will have an initial installed capacity of six million tons per annum.

20.   The warning Friday marked the third time in a week that the refinery had pollution emission problems.