Leadership Team

John Todd


John Todd joined the Arcosa Specialty Materials Leadership Team in March of 2015. He brings with him extensive quarry and mineral processing experience, as well as many years in senior management roles with one of the world’s largest construction material companies. Prior to joining Arcosa Specialty Materials, John spent over 22 years’ experience in mining and manufacturing with Holcim US, Inc.

Brian Dowden

Vice President – Operations
Arcosa Lightweight

Brian has been a leader in the Lightweight Aggregate business for 15 years, with responsibilities as Plant Manager, Project Manager, Area Operations Manager and now Vice President – Operations.  Based out of the Erwinville, LA facility, Brian leads 8 Lightweight Aggregate facilities across the country with a strong focus on employee safety, compliance and operational efficiency.

Jim Hill

Vice President Sales & Marketing

Jim Hill leads sales, marketing and R&D for the ground and plaster products. Starting with his very first position with USG, Jim has a total of 37 years in the gypsum industry, the last 13 with Arcosa Specialty Materials. Nearly four decades of industry experience means that there isn’t much he hasn’t seen or done. His primary focus throughout his career has been on delivering an exceptional level of customer service.

Tonya Orr

Vice President of Finance

Since starting with Arcosa Specialty Materials in 2001, Tonya Orr’s responsibilities have expanded and grown with the company. In her current leadership position, she now manages all financial, accounting, and Information technology departments. Tonya will continue to contribute to the future growth trajectory of Arcosa Specialty Materials leveraging her past experience with mergers and acquisitions.

Randy Pryor

Vice President of Oklahoma and Corporate Operations

Randy is a 1989 graduate from Oklahoma State University with a B.S. in Civil Engineering.  He started his career in environmental consulting, joining the cement industry in 1997.  He was operations manager at a cement manufacturing facility in Kansas and Michigan from 2005-2018.  He joined Arcosa Specialty Materials in March 2018 as Director of Manufacturing with oversight responsibilities plant facilities in Oklahoma and Nevada.

Steven Rowe

Vice President – Sales
Arcosa Lightweight

After earning a B.S. in Civil Engineering from Rose-Hulman Institute of Technology, Steve Rowe worked for 13 years for a diverse group of major general contractors. This experience translated well when he started in the expanded shale/clay lightweight aggregate industry in 1990 as a sales representative. He joined the Arcosa team in 2008 and progressively advanced to his current role. Steve leads the nationwide lightweight aggregate sales team to deliver the finest customer service and technical expertise.

Jeff Speck

General Manager of Marketing and Technical Sales – Arcosa Lightweight.

Jeff has more than 30 years’ experience in the lightweight aggregate industry.  From 1999 to 2014, Jeff was responsible for marketing, sales, and distribution of lightweight aggregate for Big River Industries. In 2015, Big River was acquired by Arcosa, where he is now responsible for Marketing and Technical Services in support of the national sales team.