The unloaded ore is blended and stockpiled in a vast yard enclosed by fine-mesh screens to stop the dust from blowing towards the nearby city of Vitória.
卸下的矿石堆积在一个巨大的货场上，上面盖着细网幔帐，以避免灰尘吹向附近的维多利亚城市。
2
The transportation and treatment of dry ore powder will produce dust and pollute the environment.
缺点是干燥矿粉的制备、运输和加工过程中会产生扬尘，造成环境污染。
3
The dust examining conditions of ore dressing workshop are introduced.