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John Hoyes Mclean
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Individual
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Publication of GB190205392ApublicationCriticalpatent/GB190205392A/en
5392. McLean, J. H. March 4. Building - blocks; paving - blocks; slabs. - A mixture of 3 parts of finely-ground quartz waste, or "tailings," from gold mining, with 1 part of finely-ground Portland cement or the like, and sodium silicate and water, is moulded into blocks and slabs, which may be formed with bevelled edges b and diagonal grooves c to prevent slipping. The blocks are hardened by exposure in the open air to weather.
GB190205392D1902-03-041902-03-04Improvements in the Production of Artificial Blocks and Slabs.
ExpiredGB190205392A
(en)