This paper has analysed the Hunan alluvial gold deposit and its present mining status.
本文分析了湖南砂金矿床及砂金的开采情况。
The soil erosion in the alluvial gold deposit is serious because of the vegetation destroyed.
沙金矿废弃矿区．由于森林植被被破坏，水土流失严重，形成矿区荒漠化。
Such study of the optimal industrial grade of the ancient conglomerate alluvial gold deposit is seldom seen abroad and the first time to be made domestically.
砾岩型古砂金矿床的工业品位研究在国内尚属首例，国外也不多见。
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