Practical experience of residual pillar resources recovery during old workings closeperiod in Xiangxi Gold Mine was summed up in this paper.
本文总结了湘西金矿老矿山闭坑中充分回收残矿柱资源的实践经验。
2
At the close of this period of antagonism Bankim Babu wrote me a letter which I have unfortunately lost.
班吉姆先生在结束这场争论时给我写了一封信,可惜我现在已经把它丢失。
3
And the way they made these predictions was they put them very close to the core and over a period of time they would take out specimens and determine what the degree of embrittlement was.