abandoned open pit的用法和样例：
- Investigation on Soil Animal Community in Abandoned Open Pit Land at Anshan Iron Mine
- In this paper environment risk assessment of the mine tailings reservoir engineering making use of open pit abandoned at Paishanlou Gold Mine was carried out.
- Different condition of economy and technology define different open pit limit.
- The application conditions in the open pit of JDC were simply recommended.
- Rain has serious effect on the operation of long and narrow deep open pit.