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HPD Public Repository

Withdrawn HPDs

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  1. Expired: Brixx Modular Bricks and Pavers/Pittsburgh Mineral & Environmental Technology, Inc./2022-11-21

    Open the PDF · HPD 33686

    HPD has expired. Expiration Date: 2025-11-15

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    Pittsburgh Mineral & Environmental Technology, Inc. (PMET) has developed the Brixx technology to produce modular bricks and pavers. The products covered under this certification primarily consist of fly ash, bottom ash, and hydrated lime…

  2. Expired: Concrete Slabs & Tiles/Sensitile Systems/2018-05-18

    Open the PDF · HPD 6000

    HPD has expired. Expiration Date: 2021-02-21

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