51.   Integrated Cargo has been testing the system for more than a year from a computerized control center in San Antonio.

52.   It has been testing the system in Trenton for a year.

53.   It concluded, however, that the incident arose from a mistake while HIR officials were testing the system, rather than from political or personal motivations.

54.   Its contents include instruments and records of a scientific experiment intended to test systems that might one day be used for a balloon on Mars.

55.   Kelly Space successfully tested the system two weeks ago at Edwards Air Force Base in California.

56.   Like the first airbags and antilock brakes, this system will be tested on affluent car buyers.

57.   Market officials said they will test trading systems Saturday to be sure the markets can operate.

58.   New Jersey began the new emissions testing system under pressure from the federal Environmental Protection Agency, which Whitman now heads.

59.   Not a chance, said her husband, who then tested the system for himself, and like his wife, was turned away.

60.   On Wednesday, engineers tested the system by measuring the gap between audio and video signals transmitted to each country.