Comment by WillAdams
7 hours ago
Early iron rails wore out and had to be replaced after a given usage (measured in years on a heavily traveled section) --- this was a big part of the need for the Bessemer process to be developed.
7 hours ago
Early iron rails wore out and had to be replaced after a given usage (measured in years on a heavily traveled section) --- this was a big part of the need for the Bessemer process to be developed.
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