This paper discusses the concept of main development tunnels and the classifications of development methods and describes the application of all kinds of development methods in gold mines.
本文讨论了主要开拓巷道的概念和开拓方法的分类，以及各种开拓方法在黄金矿山的应用。
This paper discusses the concept of main development tunnels and the classifications of development methods and describes the application of all kinds of development methods in gold mines.
本文讨论了主要开拓巷道的概念和开拓方法的分类，以及各种开拓方法在黄金矿山的应用。
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