| 黄金开采 |
fine-grained sand found in placers (MichaelBurov); fine-grained tailings dump (MichaelBurov); dredging waste (MichaelBurov); dredging tailings (MichaelBurov); rock of a small and light fraction containing gold (MichaelBurov); fine-grained part of beneficiation tailings (MichaelBurov) |
