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How heavy was a typical chest of opium imported into China?
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opium trade
The clipper ship Le-Rye-Moon, built for the opium trade, 19th-century wood engraving from the Illustrated London News.
During the 18th and 19th centuries, the weight of a typical chest of opium imported into China varied depending on its point of origin, but it averaged approximately 140 pounds (63.5 kg).1