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Plant has authored the 192 page, illustrated, hardcover book Primitive Technology: A survivalist's guide to building tools, shelters, and more in the wild (ISBN 9781984823670), published by Clarkson Potter on 29 October 2019. The book is "a practical guide to building huts and tools using only natural materials from the wild" containing "50 ...
Lunarcrete, also known as "mooncrete", an idea first proposed by Larry A. Beyer of the University of Pittsburgh in 1985, is a hypothetical construction aggregate, similar to concrete, formed from lunar regolith, that would reduce the construction costs of building on the Moon. [3] AstroCrete is a more general concept also applicable for Mars.
Parker himself emigrated to America in 1797, and died soon afterwards. There is evidence that the Wyatt "Roman" cement [1] [2] was used in building the famous Bell Rock Lighthouse. The cement was made from natural nodules of chalk and clay ("septaria") from the Isle of Sheppey. From around 1807 a number of people looked to make artificial ...
They usually form early in the burial history of the sediment, before the rest of the sediment is hardened into rock. This concretionary cement often makes the concretion harder and more resistant to weathering than the host stratum. There is an important distinction to draw between concretions and nodules. Concretions are formed from mineral ...
On December 22, 1953, Marquette Cement announced it would purchase the Southern States Portland Cement Company and the Superior Cement division of the New York Coal Company. [6] On January 11, 1961, Marquette Cement shareholders approved plans to acquire North American Cement Corporation of New York for an exchange of stock. [7]
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The cement plant at the quarry has been fueled by petroleum coke since 2007, the latter (along with the limestone itself) is a major source of mercury emissions. The cement plant was responsible for 29 percent of total Bay Area airborne mercury emissions and was shown to impact a rural site, Calero Reservoir, 20 miles (32 km) away. [86]
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