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Examples

  • Whether Protactinium or Unobtanium becomes the new top-level of the LEED rating system…?

    New Levels of LEED 2008

  • The new Protactinium level introduces more stringent requirements to ensure the purity of the design team and to verify their worthiness to obtain such a noble rating for their building.

    New Levels of LEED 2008

  • A new top-level LEED classification called Unobtanium is being proposed to replace the currently proposed Protactinium level, leading to a possible schism in the growing green building rating system.

    New Levels of LEED 2008

  • LEED has unveiled a new level of certification, Protactinium.

    TreeHugger 2010

  • LEED has unveiled a new level of certification, Protactinium.

    TreeHugger 2010

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