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Chapter 29 Relocation matters (exemption)
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Chapter 130 Vulnerable
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... ine to expel poisonous gas, and then dug out the coal one by one.
Based on the efficiency of the current coal mines, most of the coal is not available to the common people. The aristocratic families and hundreds of officials are waiting to use it, not to mention that the Ministry of Industry also has a great demand for coal.
Coal is hailed as black gold and the food of industry. When the world recovers, Zhu Biao will definitely increase the mining of coal mines. Daming is still ...
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