In the 1930s, after the lookout was no longer used for fire detection, the lookout was used as the base of a sulfur mining operation on the summit. Sulfur was mined and hauled down the mountain on pack mules. Eventually, the sulfur market nose-dived and the cost of hauling the sulfur down the mountain because cost prohibitive. The mining operation was abandoned. Today the lookout is covered by glacial snow and ice.
Climbers can see parts of the building at various times.
The climber's register is located on top of the lookout building.