It often adopts one-closed circle two stages crushing, heap leaching production process,which include raw material preparation(crushing plant), storage area construction, heap construction, leaching and washing. And pregnant solution goes through adsorption, desorbing and electrolysis, then gets gold mud. After melting, gold mud becomes gold bullion. After heap leaching, there is no need to transport tailings away, it will become permanent waste dump or re-construct after tearing down.