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Automatische Übersetzung:
Workers using pick axes and baskets to mine rock salt in mines in Northwich, Cheshire. Opened in 1670, the lrage cavity was created with gunpowder, and the roof supported by pillars of salt. Interior of a salt mine. Aquatint drawn and engraved by William Daniell from William Woods Zoography, Cadell and Davies, 1807.