 A board shed was built on the southeast side of the larger island, and a small tramline run up onto the slope of the low hill, to facilitate the removal of guano.Apparently neither the quantity nor the quality of the guano was sufficient to pay for gathering it, so that the project was soon abandoned.The Tanager Expedition was a joint expedition, sponsored by the U.S. Department of Agriculture and the Bishop Museum of Hawaii, which visited the Atoll in 1923.