Summit Materials Announces Appointment of Chief Financial Officer and Chief Legal Officer

  Summit Materials Announces Appointment of Chief Financial Officer and Chief
  Legal Officer

                Brian J. Harris named Chief Financial Officer

                  Anne L. Benedict named Chief Legal Officer

Business Wire

DENVER -- October 22, 2013

Summit Materials (“Summit” or the “Company”) today announced the appointment
of Brian J. Harris, as Chief Financial Officer, effective October 14, 2013,
and Anne L. Benedict as Chief Legal Officer, effective October 1, 2013.

Mr. Harris joins Summit after serving as Executive Vice President and Chief
Financial Officer of Bausch & Lomb Holdings Incorporated, a leading global eye
health company, since 2009. Mr. Harris previously held positions of increasing
responsibility with industrial, automotive, building products and engineering
manufacturing conglomerate Tomkins plc, including President of the $2 billion
worldwide power transmission business for Gates Corporation, and Senior Vice
President for Strategic Business Development and Business Administration,
Chief Financial Officer, and Secretary of Gates Corporation. Mr. Harris earned
his Bachelor of Accountancy from Glasgow University and is qualified as a
Scottish Chartered Accountant. With the appointment of Mr. Harris, John R.
Murphy has stepped down as Interim Chief Financial Officer. Mr. Murphy will
continue to serve as a director and chairman of the audit committee of the
board of directors of the Company’s indirect parent company.

Prior to joining Summit, Ms. Benedict was a partner in the Washington, D.C.
office of global law firm Gibson, Dunn & Crutcher LLP, where her practice
involved a wide range of corporate law matters, including mergers and
acquisitions, joint ventures and other strategic transactions, securities
offerings, securities regulation and disclosure issues, and corporate
governance matters. Ms. Benedict is a graduate of the University of
Pennsylvania Law School. She holds a Bachelor of Arts degree in English and
Psychology from the University of Michigan.

About Summit Materials

Summit Materials was formed in 2009 to develop a leading business in the
aggregates and heavy-side building materials sector through strategic
acquisitions. Summit Materials was founded by its CEO Tom Hill and a group of
investors that include members of its management team, Blackstone Capital
Partners V L.P., and Silverhawk Capital Partners. Tom Hill is the former CEO
of Oldcastle Inc., the U.S. division of CRH, Plc. To date Summit Materials has
completed over 20 acquisitions, and through its three regions, East, Central,
and West, it conducts operations in Kentucky, Tennessee, Virginia, Kansas,
Missouri, Illinois, Iowa, Utah, Idaho, Wyoming, Colorado, Texas, Arkansas, and
Oklahoma. Further information is available at

About Blackstone

Blackstone is one of the world’s leading investment and advisory firms. We
seek to create positive economic impact and long-term value for our investors,
the companies we invest in, the companies we advise and the broader global
economy. We do this through the commitment of our extraordinary people and
flexible capital. Our asset management businesses include investment vehicles
focused on private equity, real estate, hedge fund solutions, non-investment
grade credit, secondary funds, and multi asset class exposures falling outside
of other funds’ mandates. Blackstone also provides various financial advisory
services, including financial and strategic advisory, restructuring and
reorganization advisory and fund placement services. Further information is
available at Follow Blackstone on Twitter @Blackstone.

About Silverhawk Capital Partners

Silverhawk is an independent investment group established in 2005 to invest in
management buyouts and other private equity transactions in the Industrial,
Energy/Natural Resources and Business Service sectors. The partners of
Silverhawk have invested as a team and operated businesses since 1989. Further
information is available at


For Summit Materials:
For Blackstone:
Oriane Schwartzman, 212-390-2250
For Silverhawk:
Ted Gardner, 704-409-3334
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