| 或2直接抛掷量覆盖层抛掷进人先前采空区最终装载位置不需要吊铲进行挖运的数量 | castover commonly means either total castover the total amount of overburden cast into the previously mined pit, or 2 direct castover the amount of overburden cast into the previously mined pit that is in final location and does not have to be dug by the dragline |
