It is figured that if every cubic meter of sand could yield two to three grams of gold, and the sand itself used for building purposes, the profitability could merit a large-scale operation in the area.
熟悉黃金價格的人士指出，每一立方公尺（約兩噸）的沖積砂石，若能淘洗出二至三公克的砂金，而砂石又能做為建材，就足敷大規模的開發成本，有大舉採集的價值。