In the central portion of the Piceance Creek in Colorado, certain soluble salts occur in intimate association with the oil shale. The shale oil resource in this area of the Piceance Creek Basin is very large, some 50 to 100 billion barrels in place, on a Fischer Assay basis. This paper describes a class on in-situ shale oil recovery processes in which permeability and porsity are developed by dissolution of these soluble salts. These processes consist of two steps which may be conducted simultaneously or sequentially: leaching of soluble salts, and conversion of kerogen.