The accompanying data was obtained in a study to evaluate the liquefaction potential at a proposed nuclear power station (“Cyclic Strengths Compared for Two Sampling Techniques,” J. Geotechnical Division, Am. Soc. Civil Engrs.

Proceedings, 1981: 563–576). Before cyclic strength testing, soil samples were gathered using both a pitcher tube method and a block method, resulting in the following observed values of dry density (lb/ft3

):