Expanded Shale Clay & Slate Institute

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The Expanded Shale Clay & Slate Institute (ESCSI) is the international trade association for manufacturers of rotary kiln-produced expanded shale, expanded clay, and expanded slate lightweight aggregate. ESCSI promotes the extensive use of rotary kiln-produced lightweight aggregate in the lightweight concrete masonry and structural lightweight concrete markets, as well as use in asphalt, geotechnical and other appli­cations.



  • 230 East Ohio Street
  • Suite 400
  • Chicago, Illinois 60611
  • Phone: 801-272-7070

Please contact with any association updates.

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