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Leadership Team

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Monica Manolas

President, Ash Grove South

Monica Manolas is the President of Ash Grove South. Monica brings over 20 years of experience in the construction materials industry, with senior-level roles in the cement manufacturing, pipe, precast, block and ready-mix concrete businesses.


Manolas started her career as a chemist in the Cement Division of Rinker Materials and subsequently held a series of progressive roles in operations, strategic intelligence, human resources, general management and sales at Rinker, CEMEX and now CRH.


Manolas holds a B.S from the University of Miami, a Masters in Industrial and Systems Engineering from the University of Florida, a Masters of Jurisprudence from Tulane University Law School, and an MBA from the University of Florida.


In 2014, Florida Governor Rick Scott, appointed Manolas to the Florida Concrete Masonry Educational Council, where she served on the Board of Directors and Past Chairwoman. Manolas has also been active in a number of industry associations and community organizations including serving on the Board of Directors of the Portland Cement Association, the Florida Concrete & Products Association, Associated Builders and Contractors, Executive Women of the Palm Beaches Foundation (Past President), and the regional leadership council of Leadership Florida.

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Dana B. Moran

Vice President of Sales, Marketing and Distribution, Ash Grove South

Dana Moran is the Vice President of Sales, Marketing and Distribution at Ash Grove South. Moran’s career in the building materials industry started nearly 40 years ago as a sales representative with Florida Rock. Since then, Moran has held progressive positions within sales at RMC Industries, Blue Circle, Lafarge NA, and Votorantim.


Moran began his tenure with then start up the company in 2003 as the Vice President of Sales, Marketing and Distribution. He was totally responsible for all marketing and distribution functions of a one million ton/year cement operation and a six million ton/year aggregate operation.


He was promoted to his current position as Vice President of Sales and Marketing in 2018.


Dana holds a B.B.A. in accounting and a M.B.A in business administration, both from Valdosta State University. He currently is is a Board Member of the Southeast Cement Association and has previously served as Chairman of the Florida Concrete and Products Association. Moran is also actively involved in various industry related associations.

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Jeff Montz

Vice President of Finance, Ash Grove South

Jeff Montz is the Vice President of Finance at Ash Grove South.

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Remus Ianc

Vice President of Operations, Ash Grove South

Remus Ianc is the Vice President of Manufacturing at Ash Grove South. He brings over 22 years of international experience in manufacturing and operational performance improvement, with senior-level roles at cement plants and country corporate.


Ianc started his career with Lafarge as cement plant process engineer than held incremental management roles in Lafarge and CRH.
In 2019 he joined the team in Florida as Director of Operational Excellence coming from CRH Romania where he was in charge with the Aggregate and Concrete Business. In his previous assignments he was in charge with cement manufacturing for CRH Romania.


He was appointed to his current position as Vice President of Manufacturing in 2020.


Ianc holds a B.S. from Technical University Cluj-Napoca Romania in Engineering of Industrial Production Systems

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Tom Messer

Plant Manager – Branford Plant, Ash Grove South

Tom Messer is the Plant Manager for Ash Grove South at the Branford Cement Plant. Messer has over 40 years of cement manufacturing experience. He dedicated 25 of those years being involved with Process and Production roles as well as being a Production Manager for both domestic and international cement producers.


Mr. Messer has worked abroad on international assignments and spent a total of one year in Brazil.


Mr. Messer started his tenure at the Branford facility 17 years ago as Production manager and has held the role of Plant Manager for 15 years.


Messer is a six-sigma black belt, and completed Penn States’ Executive Leadership Program through their Business School (Smeal School of Business). Messer has attended countless industry related training and seminars both in the U.S. and internationaly over the past 40 years.

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Dirk Cox

Plant Manager – Sumterville Plant, Ash Grove South

Dirk Cox is the Plant Manager for Ash Grove South at the Sumterville Cement Plant and has managed six other cement plants. Cox has 40 + years of experience in the cement industry and holds an engineering degree from the Virginia Military Institute in addition to attending executive management courses at Duke, Thunderbird, Stanford, and a nearly complete MBA. He has an associate’s degree in accounting.


Cox has held plant positions in safety training, engineering, production, maintenance, new plant project management, new plant commissioning, and corporate engineering.