51.   Authorities said the robbers pulled off the crime in a pouring rain and loaded all the barrels into their truck, driving off without leaving a trace.

52.   Before that, it has been believed, life consisted of primitive, soft-bodied organism that left no trace in the fossil record.

53.   By embracing pre-World War II practices, it aims to reverse the decline of family farms, improve the conditions of laborers and leave no trace on the environment.

54.   By contrast, Strobl hardly seemed to leave a trace.

55.   He says no needle marks were found on the body, but added Tuinei could have used a small needle without leaving a trace.

56.   Highly specialized equipment in police laboratories should allow investigations to determine the make and year of the vehicle or vehicles that left the traces in the tunnel.

57.   In decades of moving through a half dozen countries, he left no trace.

58.   Officials said this made it difficult to include prostitutes, because they often move without leaving a trace.

59.   Once again, the killer took gold jewelry, two passports and an old jacket, setting fire to the house and leaving no traces.

60.   Some of the men left little trace of their time in America.