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Chapter 2400 Fire Lotus (Part 1)
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Chapter 2402 Fire-born lotus (below)
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... there were several hundred Newcomen steam engines in service in northern and central England, and it is still used in some coal mines even today.
The biggest disadvantage of this steam engine is that it is really wasteful in fuel, so it is limited to coal mines where coal is abundant and has little sales. Its main function is to lift water. England has a lot of shallow coal, but these coals contain a lot of water, and they accumulate in the roadway, which can easily cause mine disaster ...
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