• Johnson Matthey Electronics,
  • La Roche Industries,
  • Los Angeles County Sheriff's Department,
  • National Industrial Sand Association,
  • National Lime Association,
  • National Mining Association,
  • National Stone Association,
  • National Utility Contractors Association,
  • The Associated General Contractors of America,
  • The Fertilizer Institute,
  • The Gypsum Association, and
  • Wiley, Rein & Fielding (representing UNIMIN, a supplier of high-quality silica used in semiconductor manufacturing).


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