Mark Towe is Chief Executive Officer of Oldcastle, Inc., the North American arm of CRH plc, one of the world’s leading building materials companies based in Dublin, Ireland. Mark also serves as a CRH Board Member. Mark joined Oldcastle as Chief Operating Officer of the Materials Group in 1997, became President in 2000 and was promoted to Chief Executive Officer in 2006. Previously, Mark was President and CEO of Meridian Aggregates Company in Denver, Colorado, and has 33 years of experience in the industry. He served as Chairman of the Board of the National Stone Sand and Gravel Association in 1998 and presently serves as Chairman of the Board of Trustees for the International Center for Aggregate Research at the University of Texas, the Chairman of the Board of Trustees for the Rocks Build America Foundation at the Smithsonian Institute in Washington, DC, and serves on the Board of Trustees at Virginia Wesleyan College in Norfolk, Virginia.