PACA BOARD OF DIRECTORS

Leading the Organization in 2026 and Beyond

The following is the roster of PACA's Board of Directors and Executive Committee.

As of November 2025:

Officers

Chairman
Jamie Stilley, Amerikohl Aggregates, Inc.

Vice Chairman
Travis Rohrer, Rohrer's Incorporated

Secretary / Treasurer
Jonathan Kolbe, Allegheny Mineral Corporation

Executive Committee

  • Jamie Stilley (Chair), Amerikohl Aggregates, Inc.
  • Travis Rohrer (Vice Chair), Rohrer’s Inc.
  • Jonathan Kolbe (Secretary/Treasurer), Allegheny Mineral Corporation
  • Jeff Detwiler (Immediate Past Chair), New Enterprise Stone & Lime Co., Inc.
  • Bob Housel, Masters RMC, Inc.
  • Rod Martin, Martin Stone Quarries, Inc.
  • Dan Schaffer, Heidelberg Materials
  • Mark Carroll, Allan Myers (non-voting)
  • Mike Hawbaker, Glenn O. Hawbaker, Inc. (non-voting)
  • Rob Stewart, York Building Products (non-voting)
  • Richard Rohrssen, Greer Industries (non-voting)
  • Greg Donecker, Kemper Equipment, LLC. (non-voting)

Board of Directors

2026-2027-2028

  • Yonn Barrick, Keystone Cement Company
  • Mark Carroll, Allan Myers
  • Mike Hawbaker, Glenn O. Hawbaker, Inc.
  • Rod Martin, Martin Stone Quarries, Inc.
  • Richard Rohrssen, Greer Industries

2026-2027

  • Jason Blase, Conewago Ready Mix
  • Christian Bononi, Amrize
  • Jonathan Byler, Byler Materials Group
  • Michael Gentoso, Stavola Companies
  • Bob Housel, Masters RMC, Inc.
  • John Kibblehouse, Jr., H&K Group
  • Shane Miller, Rahns Construction Material Co.

2026

  • Tom Bryan, III, Bryan Materials Group
  • Brandon Groff, Pennsy Supply, Inc., a CRH company
  • Jay Mizack, Heidelberg Materials
  • Rory McCoy, Centre Concrete Co.
  • Greg Reshenberg, Wendell H. Stone Company, Inc.
  • Dan Schaffer, Heidelberg Materials
  • Rob Stewart, York Building Products
  • Josh Williams, Buzzi Unicem USA

Immediate Past Chairman

  • Jeff Detwiler, New Enterprise Stone & Lime Co., Inc.

Associate Members (2026-2027)

  • Nathan Moore, Continental Placer Inc. (Chair, non-voting)
  • Andrew Lawrence, P.E., Lawrence Concrete Consultants, LLC (Vice Chair, non-voting)

Young Leaders Development Group (YLDG) (2025-2026)

  • Paul McAndrew, Masters RMC, Inc. (Chair, non-voting)
  • Austin Slater, Allegheny Mineral Corporation (Vice Chair, non-voting)

Counsel

  • Kevin Garber, Babst Calland

Lobbyist

  • Hank Butler, Butler Consulting, LLC

Communications Partner

  • Jill Helsel Gingrich, La Torre Communications
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PACA's Online e-Learning Center

This program provides free continuing education to the design and specifying communities. There are currently four courses available, ranging from 30-60 minutes focused on the cement, aggregates and concrete industries. You'll receive a certificate of completion once you pass a quiz. The bookmarking feature allows you to leave the course and resume where you left off when you return

    The Pennsylvania Aggregates and Concrete Association (PACA) is the industry’s unified voice, representing more than 200 member companies across the state.