住在海洋或天然盐矿附近的人是幸运的。
Those who lived near the ocean or other natural sources for salt were lucky.
几年前，人们在中国发现了一个大盐矿。
卤井安全期是岩盐矿山共同关注的课题。
Production period of brine well is an item which all salt mines attention.
对该区今后盐矿评价及开采具有重要意义。
对该区今后盐矿评价及开采具有重要意义。
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