"Sand Doom," published in "Astounding Science Fiction" in 1946, is part of Leinster's "Colonial Survey" series. Bordman, a Colonial Survey officer, en route to the new world of Nosa II to certify it as open for visitation, and Aletha Redfeather, a representative of the Amerind Historical Society, find themselves stuck on the planet with a circular problem. They need repair parts -- but without them, they can't bring in the ship that "carries" the repair parts