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Why did Chinese miners always build round shafts in search of mineral resources?

Question #148228. Asked by pehinhota.
Last updated Jan 17 2021.
Originally posted Jan 02 2021 3:59 PM.

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Answer has 0 votes.
Circular shafts have greater strength than rectangular shafts. They also tend to last longer and have more space for ventilation. However, they tend to be much more expensive than non-circular shafts.


Jan 17 2021, 12:34 PM
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