Read the following:
Garhammer, J.J. A review of the power output studies of Olympic and powerlifting: Methodology, performance prediction and evaluation tests. Journal of Strength and Conditioning Research, 7:76-89, 1993.
Hakkinen K, Mero A, Kauhanen H. Specificity of endurance, sprint and strength training on physical performance capacity in young athletes. J Sports Med Phys Fitness 1989 Mar;29(1):27-35.
McBride, J.M., T.T. Triplett-McBride, A. Davis, and R.U. Newton. A comparison of strength and power characteristics between power lifters, Olympic lifters and sprinters. Journal of Strength and Conditioning Research 13:58-66, 1999.
Thomas, M., A. Fiataron and R.A. Fielding. Leg power in young women: relationship to body composition, strength and function. Medicine and Science in Sports and Exercise, 28:1321-1326, 1996.
The McBride article is the one I think you’re referring to. There is also a study done on Olympic athletes from the 70s which also indicated faster times to 30m for Olympic weightlifters.