51.   The materials all are commonly used in mining, authorities said, but they also can be used to make a bomb.

52.   The man she approached, it turned out, was a veteran police informer, and he alerted a detective he knew, the authorities said.

53.   The parents had not only visited their son, the authorities said, but also sent him money to live on.

54.   The operations yielded no arrests, the authorities said, though in one house in Tijuana, soldiers found sophisticated radio equipment.

55.   The real motive, says one authority, was to get rid of the stacks of boxes left after the presents had been unwrapped.

56.   The second remained missing Saturday afternoon, the authorities said.

57.   The three returned the next day, beat her again, piled rocks and sticks on her, then left her again, authorities said.

58.   They say health authorities and the industry should do more to warn consumers of the dangers and limit exposure to the suspect radio signals.

59.   They face up to seven years in prison, the authorities said.

60.   Truong, the authorities said, allowed the Kenmore to deteriorate and become overrun by drug dealers.