Oil shale colorado Underground nuclear explosion research applied to shale oil and buried treasure. Post Ap 13, 1967 p.46 Estimated western Colorado recovery plan will produce a trillion barrels. Post Ja 29, 1967 p.33 Shale oil potential. Cervi's Journal My 10, 1967 p.3 Demand made to safeguard Colorado land. Cervi's Journal Jy 19, 1967 p.l 1966 and 1967 showed rush to grab oil shale lands in public domain in county. Cervi's Journal Jy 19, 1967 p.2
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