1. General Progress In the six months from October, 1968 to March, 1969 the work has been divided into two main sections. The first of these has been the collection of tensile creep data both for the unreinforced resin and for the uni- and bi-directionally reinforced composites. The second section has been the continued quest for a successful lateral extensometer. In Progress Report No. 2 it was reported that five creep machines were in production. These have now been installed and are all functioning satisfactorily. Longitudinal extensometers of the type described in Progress Report No. 2 have been manufactured for use on these rigs. Comparisons have been made2between the experimental creep results of the composites described in this report and theoretical predictions based on the Elemental model.3'4 Good agreement was shown to exist between the experiment and theory.