Dec 22, 2019 The natural sandstone used for those grinding wheels was identified as good for the purpose way back when, and chances are that quarry was primarily for grindstones. The sandstone in that quarry was found to be ideal for grindstones, and the strata of the sandstone was thick enough to allow quarrying largethick grindstones.Free consultation 40 years of industry experience providing one-stop solution
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