Great Deposits: The Atolia District Tungsten Mines ...
· The first gold miners had trouble with separating white substance called "heavy spar" from gold at the Yellow Aster mill. Later, this float was recognized as scheelite – a calcium tungstate mineral and major source of tungsten. The discovery of the tungsten and it's demand for use in hardening steel led to the founding of the tungstenoriented Atolia Mining Company in .