This paper is to make an synthetical evaluation aimed at economy, environment and social benefits of dent area in Yuanbaoshan 2nd mine.
以元宝山矿二井塌陷区为研究对象，对所研究对象的经济、环境和社会效益三者进行综合评价。
The paper mainly deals with the analysis and design of coal sales management system of YuanBaoShan open pit coal mine.
本文主要对元宝山露天煤矿煤炭销售管理系统进行了分析及设计。
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