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  2. Gypsum block - Wikipedia

    en.wikipedia.org/wiki/Gypsum_block

    Gypsum block is a massive lightweight building material composed of solid gypsum, for building and erecting lightweight, fire-resistant, non-load bearing interior walls, partition walls, cavity walls, skin walls, and pillar casing indoors. Gypsum blocks are composed of gypsum, plaster, water and in some cases additives like vegetable or wood ...

  3. National Gypsum - Wikipedia

    en.wikipedia.org/wiki/National_Gypsum

    National Gypsum Company is a company based in Charlotte, North Carolina, that produces drywall gypsum boards in the US. It has 17 gypsum board plants in the US and presents itself as a fully integrated building products manufacturer. [1] It is a private company, incorporated as New NGC, Inc. in 1993 after previously filing for Chapter 11 ...

  4. USG Corporation - Wikipedia

    en.wikipedia.org/wiki/USG_Corporation

    In 1940, the U.S. Justice Department filed suit against USG and six other wallboard manufacturers, charging them with price fixing under §§ 1 and 2 of the Sherman Act. The claim stemmed from US Gypsum's 1929 cross-licensing agreements for its patented wallboard, which set prices at which the wallboard must be sold.

  5. Gypsum recycling - Wikipedia

    en.wikipedia.org/wiki/Gypsum_recycling

    Gypsum is fully and eternally recyclable [6] and, as a consequence, gypsum waste is one of the few construction materials for which closed loop recycling is possible. Closed loop recycling of gypsum products involves the collection and processing of the gypsum waste, and the delivery of the obtained recycled gypsum to the manufacturer of gypsum ...

  6. Commodity price index - Wikipedia

    en.wikipedia.org/wiki/Commodity_price_index

    A commodity price index is a fixed-weight index or (weighted) average of selected commodity prices, which may be based on spot or futures prices. It is designed to be representative of the broad commodity asset class or a specific subset of commodities, such as energy or metals. It is an index that tracks a basket of commodities to measure ...

  7. Official Board Markets - Wikipedia

    en.wikipedia.org/wiki/Official_Board_Markets

    Official Board Markets. Official Board Markets was a weekly trade publication for independent and integrated paperboard converters and mills, packaging buyers, paper recyclers, packaging end-users, and paper brokers. It was in circulation between 1925 and 2012.

  8. Gypsum - Wikipedia

    en.wikipedia.org/wiki/Gypsum

    Alabaster. Fine-grained, slightly colored. Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. [4] It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk.

  9. Producer price index - Wikipedia

    en.wikipedia.org/wiki/Producer_price_index

    A producer price index (PPI) is a price index that measures the average changes in prices received by domestic producers for their output. Formerly known as the wholesale price index between 1902 and 1978, the index is made up of over 16,000 establishments providing approximately 64,000 price quotations that the U.S. Bureau of Labor Statistics (BLS) compiles each month to represent thousands ...

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