During the Silver Boom of 1890, miners and loggers harvested the trees, using the timber for mine and home construction.
1890年爆发采银热潮，矿工和伐木工为了建造矿井和房屋，将这里的树木砍伐殆尽。
By production practice for several years, it achieved evident benefit of high output, high efficiency, low timber consume and well safety in this mine.
经过几年的生产实践，该矿取得了高产、高效、坑耗低、安全好的明显效益。
By production practice for several years, it achieved evident benefit of high output, high efficiency, low timber consume and well safety in this mine.
经过几年的生产实践，该矿取得了高产、高效、坑耗低、安全好的明显效益。
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