About 6:10 a.m., on October 2, 1979, Amtrak passenger train No. 4, the Southwest Limited, derailed 3 locomotive units and 17 cars while moving through a 7 curve on the Atchison, Topeka and Santa Fe Railway Company's tracks at Lawrence, Kansas. The speed of the train was 78 mph. Of the 147 passengers and 30 crewmembers, 2 persons were killed and 69 persons were injured. Property damage was estimated at $4,634,330.