The Quarry


The Beckmann Quarry, owned by Martin Marietta, has been producing crushed-stone products for more than 80 years.  It is one of the largest aggregate mines in Texas and the nation and has been consistently recognized for its outstanding safety and environmental precautions.

The Beckmann Quarry is an economic generator for San Antonio, providing locally sourced aggregates to the community, lowering the cost of construction and development in San Antonio.


While there is a lot of rock in Texas, surprisingly very few areas actually have the quality of stone necessary to meet concrete and asphalt pavement specifications. Where high quality stone is present, it is generally concentrated in narrow bands or relatively small pockets, such as is the case with the Edwards Formation.

The proximity to market is critical because of high transportation costs, which is why the vast majority of aggregates consumed in the San Antonio area must be sourced from quarries over or near the Edwards Aquifer Recharge Zone.


Martin Marietta

Martin Marietta, an American-based company and a member of the S&P 500 Index, is a leading supplier of aggregates and heavy building materials, with operations spanning 36 states, Canada and the Caribbean. Dedicated teams at Martin Marietta supply the resources for the roads, sidewalks and foundations on which we live.

The Southwest Division, based in San Antonio, provides Texans with more affordable construction materials for regional public and private projects such as residential neighborhoods, roads and highways, schools and businesses.

For job opportunities with Martin Marietta in Bexar County, please contact us.


The Beckmann Quarry Leadership Team:


Jasen Talley
Plant Manager

Roger Pena

Arthur Jump

Willie W. Rieger
Production Supervisor

Joshua S. Beckcom
Field Service – Leadperson

Brandon Barrett

Eddie De La Garza

Steven A. Cano

Terry L. Gearhart

Mauro M. Cantu

Martin Marietta employs 360 local residents, of whom 106 operate the Beckmann Quarry.


The aggregates, concrete and ready mix industry have an annual impact of $5 billion on the Texas economy. The Beckmann Quarry is one of the region’s oldest and largest active quarries and is a large contributor to the Texas economy.


San Antonio has a rich history of quarry redevelopment. After the quarry is fully mined out, an opportunity will exist to repurpose the land, as has been done with other parts of the Beckmann Quarry to form The Shops at La Cantera, The Rim Shopping Center and Six Flags Fiesta Texas. Other former quarries in San Antonio have been transformed into economic and tourism drivers such as the San Antonio Zoo, the Japanese Tea Gardens, Morgan’s Wonderland and The Alamo Quarry Market.

Aggregates & Products


Aggregates are sands, gravel and crushed stone, products of a pit or a quarry. Aggregates can be used to build roads, sewers, sidewalks, schools, factories, offices, parking lots, driveways, recreation centers, hike and bike trails and many other amenities of modern living.

Locally-sourced aggregates are beneficial to San Antonio’s development. With local sources, transportation fees are lower, reducing costs for infrastructure projects.

Aggregates (Crushed Rock)

Martin Marietta is the second-largest provider of construction aggregates in the United States.

The Beckmann Quarry is a supplier of crushed rock aggregates. To order materials please contact us.

Ready Mix

Ready mixed concrete is a mixture of sand and rock aggregates with cement and water. This type of concrete is delivered in a freshly mixed, unhardened state.  Ready mixed concrete is affordable, durable and can be used in a variety of applications, making it one of the most popular construction materials in the world.

The Beckmann Quarry is a supplier of ready mixed concrete. To order materials, please contact us.

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