31.   After creosote was discovered in a sinkhole in January, soil tests found traces of benzene, a carcinogen, officials said.

32.   After initially searching the Hudson River and finding no trace of him, authorities charged Scott Douglas with her murder and issued a warrant for his arrest.

33.   After those four samples were tested and retested, no traces were found.

34.   But if tests find traces of VX, Iraqi credibility would be further weakened.

35.   But investigators say they are perplexed that the traces were not found on pieces of debris from the same precise place on board the aircraft.

36.   But last September, Friends of the Earth found traces of the corn in taco shells.

37.   But Linch and Long said tests they conducted hours later found traces of blood on the sink and faucet.

38.   But no other trace was found.

39.   But they found no trace of the patents.

40.   But tumors that grow rapidly may become apparent as a discernible lump months after a routine mammogram has found no trace of it.