A 1.2 m/sup 2/ array of Lexan track detectors, 1 g cm/sup -2/ thick, inside a 1 g cm/sup -2/ aluminum wall of the Skylab workshop, detected 104 cosmic-ray nuclei with Z> or =65, seven nuclei with Z> or approx. =88, three nuclei with Z> or approx. =94, and no superheavy nuclei (Z> or approx. =110). The shape of the energy spectrum for events with Z> or =65 is consistent with that for Fe, and the abundance ratio is (Z> or =65/Fe)approx. =1.3 x 10/sup -5/. Other abundance ratios are (74 or =65)approx. =0.38; (Z> or =88)/(74 or =94)/(74< or =Z< or =87)=0.043. The world limit for superheavy nuclei is none out of 204 with 74< or =Z< or =87. The median error in charge for the Skylab experiment is 3.1%. The charge distribution is inconsistent with a source of solar-system composition (even with preferential acceleration of elements with low ionization potential) and is quite consistent with a source of predominantly r-process material.