The so-called "sinkingshaft" was designed by the eminent engineer as an entrance to London's Thames Tunnel, but the space has now been transformed into an underground performance venue.
In course of sinking the well-shaft they came upon a deposit of a very rare mineral.
他们在凿井的过程中，发现了一处稀有矿物矿床。
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It provides the experiential and technical assistance for shaftsinking by freezing method in thick overburden of Juye coalfield and other mining areas.