National Geographic : 1954 Oct
O National Geographic Society 4 Bound for Canada's Deep Woods, Prospectors Load Supplies Field expeditions often last months. Camped in the wilderness, explorers gather ore samples and stake claims. Equipment, including tents, bedding, food, and the all-important radiation counters, goes by seaplane. Uranium City bush pilots do a thriving business. Kodachromes by National Geographic Photographer Volkmar Wentzel + Workers Handle "Yellow Cake" Like Flour-It's Not Dangerous In this Monticello, Utah, plant, yellow cake (a com pound of uranium, vanadium, and sodium) is fed into a furnace with soda ash, salt, and sawdust. Emerging, it is cooled and dumped into warm water. Vanadium dissolves; uranium is left as a wet black powder.