The purpose of the experimentation described in this report was to examine the possibility of combining a methanol-water treatment step, which results in liquid yields of about 90%, with a fast (one hour) solvent extraction step. If successful, the experimentation would result in the development of a fast, high-yield, single-step recovery process. The terminology ''single-step''refers to the fact that the shale is handled only once in the recovery process rather than being treated and then extracted in two separate steps. The first two single-step extraction experiments, run under the same experimental conditions, demonstrate the possibility of quickly recovering high yields of liquid product with only one handling of the shale. The third experiment was performed by heating the shale in an inert atmosphere under the same conditions of time and temperature followed by extraction with methylene chloride solvent. The third experiment serves as a benchmark to compare the effectiveness of methanol-water with short reaction-time dry heating conditions in the recovery process. The experiments yielded two important results. First, most of the organic matter was recovered by methylene chloride in the first extraction step, which required less than three hours to perform. The second important result was that dry heating on the shale under these conditions was ineffective in allowing oil to be recovered. Overall, these experiments were successful for quickly extracting large percentages of organic material from Green River shale using a single-step extraction technique. This procedure reduces experimental complexities reported earlier and avoids possible alteration of product by atmospheric oxygen. The technique shows promise for the development of a fast, efficient shale oil recovery process. 9 refs., 1 tab.