... Report on the building and ornamental stones of Canada, vol. I-V (1912)
Parks, W. A. (William Arthur), 1868-1936, Canada. Mines Branch · Ottawa : Government printing bureau · leaf 221
e regarded with some latitude. Specific gravity 2 • 702 Weight per cubic foot, lbs 167-757 Pore space, per cent 0-544 Ratio of absorption, per cent 0-208 Coefficient of saturation one hour 0-56 two hours 0-65 * * thirty-eight hours 0-79 Crushing strength, lbs. per sq. in 25959- wet, lbs. per sq. in… … 141 The prevalence of black knots is the most unfortunate feature in thisstone, as in all the product from the area. No pieces of any considerablesize can be obtained free from this disfigurement. The equipment consists of hand derricks only. Five or six men areusually employed, but there is no…
Building stones
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