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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.
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The Wild North was known at one stage by the working titles, "Constable Pedley", "The Wild North Country" and "North Country". [5] The film was based on the true story of Mountie Constable Arthur Pedley, who in 1904 was assigned to find a lost missionary in northern Alberta. He managed to succeed despite great difficulty. [6]
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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 ...
Holcim operates four businesses segments: cement, aggregates, ready-mix concrete, and other products, including precast concrete, asphalt, mortar, and other building materials. Originally, the company was established as LafargeHolcim by the merger on 10 July 2015 of Holcim and Lafarge , which had combined sales of CHF 26.7 billion in 2019. [ 3 ]