最終更新日:2022/12/24
Near a shaft fitted with the most improved winding-appliances may be seen another in which men and quartz are raised from a depth of 2,556 feet in a bucket—and that without a swivel at the bucket-head.
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Near a shaft fitted with the most improved winding-appliances may be seen another in which men and quartz are raised from a depth of 2,556 feet in a bucket—and that without a swivel at the bucket-head.