Progress was made in all three areas this quarter--geochemistry, petrology, and basin analysis. In geochemistry the isotope work is well-established as is elemental analysis. Both are useful in application of data from other sources to the shales sequence, as shown. The V/Ni is proceeding well, and should be complete by July. The phenolic aldehyde work is not yet started because of equipment supply problems. In petrology some important progress was made in internal surface area studies of the shale in the Cumberland Thrust. Thin section petrography of outcrop samples from the Virginia side of the thrust is nearly complete. In basin analysis, the basic stratigraphic work of the project is nearly complete, with perhaps some problems remaining in the lower part of the section. All contractors are encouraged to produce the isopach maps, etc. of each unit as soon as possible. Representatives from Cincinnati have attended several meetings this quarter helping to coordinate these activities. The paleocurrent study of the basin is very nearly complete, needing some final work along the western side.