71.   The planetary swing-by technique gives spacecraft managers a way to change course without using extra fuel.

72.   The rocket nozzles are reconfigured in such a way that they more efficiently use fuel.

73.   The rotation gives the rocket a boost, allowing it to use less fuel or to carry a heavier payload than a similar rocket launched from a higher latitude.

74.   There have been agencies, like a bus operator in St. Louis, that continued using the fuel after the trial period, she said.

75.   They also are cheaper to operate than big jets because they use less fuel, and flight crew wages are lower.

76.   There is no requirement in the state law that the owner of such a vehicle ever has to use alternative fuel.

77.   They point to a newly added clause in their SBK contract that forbids them from using the fuel for tritium production.

78.   This safety test would analyze whether the FFTF building could contain a nuclear meltdown when using fuel highly enriched with plutonium.

79.   Those reductions have come about through tailpipe and smokestack regulations, along with mandates to use cleaner fuels, he explained.

80.   Under the legislation, the most heavily polluted cities in the country must use oxygenated fuel in efforts to reduce emissions.