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  2. Cubic zirconia - Wikipedia

    en.wikipedia.org/wiki/Cubic_zirconia

    Cubic zirconia (abbreviated CZ) ... [16] attributed to price-fixing practices of De Beers Company which held a monopoly on the market from the 1870s to early 2000s. ...

  3. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    Prices of hydrogen produced by distributed steam methane reforming, as predicted by H2A Production Model from United States Department of Energy, [9] assuming price of natural gas of US$3/MMBtu (US$10/MWh; US$0.10/m 3). Does not include cost of storage and distribution. 1: 2 H (D) Deuterium: 0.0001667 [10] 13 400: 2.23: 2020: CIL [11]

  4. List of mines in South Africa - Wikipedia

    en.wikipedia.org/wiki/List_of_mines_in_South_Africa

    This list of mines in South Africa is subsidiary to the list of mines article and lists working, ... (338 mg) per 100 cubic meters (3.38 mg/m 3).

  5. Zirconium - Wikipedia

    en.wikipedia.org/wiki/Zirconium

    The most common oxide is zirconium dioxide, ZrO 2, also known as zirconia. This clear to white-coloured solid has exceptional fracture toughness (for a ceramic) and chemical resistance, especially in its cubic form. [37] These properties make zirconia useful as a thermal barrier coating, [38] although it is also a common diamond substitute. [37]

  6. Mining industry of South Africa - Wikipedia

    en.wikipedia.org/.../Mining_industry_of_South_Africa

    Despite declining production, South Africa's gold exports were valued at US$3.8 billion in 2005. [24] As of end-2018, South Africa had a potential 6000 tonnes of reserves. [25] In July 2018, the Mineral Council of South Africa announced that 75% of mines in South Africa were now unprofitable due to the declining gold reserves. [26]

  7. $8.22 at amazon.com. While you’ve probably heard of The Old Farmer’s Almanac, you may not know that it’s a publication that was founded by Robert B. Thomas in 1792 in Grafton, Massachusetts ...

  8. Diamond simulant - Wikipedia

    en.wikipedia.org/wiki/Diamond_simulant

    Cubic zirconia can be coated with diamond-like carbon to improve its durability, but will still be detected as CZ by a thermal probe. CZ had virtually no competition until the 1998 introduction of moissanite (SiC; silicon carbide). Moissanite is superior to cubic zirconia in two ways: its hardness (8.5–9.25) and low SG (3.2).

  9. Arctic blast sweeps across U.S. as Great Lakes region braces ...

    www.aol.com/news/snow-could-dash-holiday-weekend...

    Don’t forget to check the local forecast before you hit the road: Snowfall could snarl post-Thanksgiving travel plans as 16 million are under winter alerts across the Great Lakes and the Central ...

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