Lake Mead gained in popularity as a recreation destination after World War II. Debate over its legitimacy faded. However, reservoir use west of Grand Wash and Congressional action on Bridge Canyon dam were suspended. What NPS staff at LMNRA wanted was a permanent status spelling out how they were to administer it. Tillotson, with his doubts, remained as Regional Director until 1955.
March 1952, an application for a sawmill on the Shivwits plateau was passed on to the Director. who said that though multiple uses were allowed, they should not be in conflict with recreation potential. In this case, neither water nor the ponderosa were abundant, so the application should be denied, given that recreation development is probable in not too distant a future (given likelihood of Bridge being built). Tillotson grumbled that the Shivwits area was too large. Also, NPS could not protect it from fire, which would be embarrassing if cutting were denied. He then told the Sup't to prepare a new boundary study, limiting the area of the Shivwits included to access points and heads of canyons. Justify, he added, any necessity to retain land very carefully.
Naturalist Grater visited Mt Dellenbaugh's vicinity and Whitmore Point in August. His Sep 1952 report was enthusiastic [as all such reports were] about the potential of the Sanup and Whitmore-Parashont-Andrus esplanades for visitor use, offering "numerous vistas and science features on a magnificant scale". However, the Shivwits offered nothing of unusual value, though there was a considerable amount of ponderosa and other plants not otherwise found. The Sanup was a complete biological unit, and could support homesites and year-round recreation facilities. This was also true of the Uinkarets mountains. LMNRA's ranger chief visited the Dame sawmill near Green Springs. Fire control not being really a serious problem, the staff consensus was that no change in the boundary was needed. Ample land remained for private development. The southern end of the Shivwits would be most suitable for recreation. The sup't was concerned, Nov 1952, that cutting be very selective; reproduction of pine was slow, and they were valuable in place, but he approved since development would be years away, and change should wait until Bridge dam authorized. (Logging seems to have taken place from about 1950.) Tillotson passed this on to the Director: legislation would be far in the future, and we should concentrate on administering a recreation function. Apr 1953, the Director agreed on no change.