Research includes an in-depth investigation of heat transfer in the shale, dielectric modeling, study of wave propagation in lossy media, and the development of a numerical model to simulate in situ oil recovery by electromagnetic heating. A theoretical understanding of the underlying physical mechanisms of the heating process is helpful in designing appropriate technology to optimize oil yields, energy requirements, and heating geometries. Understanding dielectric behavior permits the design of appropriate radiation heating equipment. The development of a comprehensive model allows predictions and estimates for oil yields, design of optimal heating geometries, and net energy recovery ratios. The research performed so far on these aspects is summarized in this report. 26 refs., 14 figs.