Common Words by Reading

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pit (esp. of a mine)
pit (esp. of a mine)
closure of a mine
shaft (e.g. in a mine)
within a pit or (mine) shaft
inclined shaft
mine-pit bottom
entrance into drift or pit
burying Confucian scholars alive
opening of mine
burning books on the Chinese classics and burying Confucian scholars alive (Qin dynasty thought suppression campaign)