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Production Of 1700 Tons Of European Version Of Milling Equipment

In 1700, the annual output of coal was just under 3 million tons. Between 1770 and 1780, the annual output of coal was some 6.25 million long tons or about the output of a week and a half in the 20th century. After 1790 output soared, reaching 16 million long tons by 1815. By 1830 this rose to over 30 million tons.

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