 The ore was hauled to the mill by way of mule teams, until just after the start of the 20th century when an aerial tram was completed between the Mammoth Mine and the Mammoth Mill.As the tram's construction neared completion, and the need for the town waned, the Schultz post office was closed on May 1, 1902.The mines reopened in 1915 due to World War I's increased demand for the molybdenum and vanadium found in the area.