51.   Tests showed the smoke did not contain dangerous levels of cyanide gas that was released by plastics burning in the warehouse, state police Lt. Curtis Bailey said.

52.   The air in submarines contains weak levels of poisons.

53.   The European Commission said Thursday it has opened an investigation into reports that nine brands of baby formula in Britain contain high levels of unhealthy chemicals.

54.   The fish contained levels of heavy metals, including arsenic, copper and lead, which all were well above safe eating levels, Cavanagh said.

55.   The government has ordered seven brands of traditional Chinese medicine off pharmacy shelves after they were found to contain dangerous levels of arsenic, a spokesman said Friday.

56.   The probe follows a study in Britain showing that nine brands of artificial baby milk contain dangerous levels of chemical called phthalates, which harmed fertility in laboratory rats.

57.   The scientists said Thiomargarita is found in great concentrations in Namibian coastal sediments that contain high levels of toxic sulfide.

58.   The urine sample submitted by Irish swimmer Michelle Smith contained deadly levels of alcohol, International Olympic Committee medical commission chairman Prince Alexandre de Merode said Thursday.

59.   There are growing fears that staples like fries and potato chips contain high levels of a potentially carcinogenic substance called acrylamide.

60.   What little data exists shows all three of those heavily consumer species often contain unsafe levels of mercury, according to the report.