BMC Enterprises, Inc.
8112 Maryland Avenue, Suite 320
Clayton, MO 63105

We strive to provide quality customer service. Please contact us with any questions, comments, or needs and someone will reach out to you. We look forward to helping make your next project a success.


Nathan McKean


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Mr. McKean is the 4th CEO (2004) and sole shareholder of BMC Enterprises, Inc., parent of Breckenridge Material Company (est. 1925).

Mr. McKean has held every functional leadership responsibility since beginning his full time employment in 1992.

Mr. McKean successfully developed and executed a growth strategy through one of the most difficult economies during the Great Recession and continues to execute that strategic growth plan during the recent global pandemic.

Nathan has completed 22 acquisitions in his sixteen years as CEO, establishing BMC Enterprises as a leader in the industry and a vertically integrated supplier of aggregates and ready mix concrete.

Nathan has served as President of the St. Louis Concrete Council and Chairman of the Missouri Concrete Association, and served as Chairman of NRMCA’s CONCRETEPAC for eight years.  Nathan has served on the Board and Executive Committee of the NRMCA and currently is serving as Chairman of the Government Affairs Committee.

Andy Arnold
President/ COO


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Mr. Arnold has more than 29 years of experience in ready mix concrete and aggregates working in every aspect from sales, marketing, operations, production, and growth and development.

Mr. Arnold previously worked for LafargeHolcim SA in Paris, France as VP of Ready Mix Concrete Performance and responsible for Lafarge’s worldwide performance.

Andy also previously served as VP/GM for LafargeHolcim’s operations in Kansas and Missouri.

Andy joined Breckenridge Material Company in 2006 and served as Vice President until 2015 when he was promoted to President.

Andy received a Bachelor of Science in Agricultural Economics from Virginia Tech in 1989.

John Crumrine


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Mr. Crumrine joined Breckenridge in the summer of 2013 and is responsible for leading finance, accounting, IT and risk management.

John held various executive and director level roles at Sensient Technologies, Aurora Foods and Ralston Purina, all billion dollar level manufacturing companies.

John received a Bachelor of Science in Accounting from Truman State in 1992, and MBA from Webster University in 2001.

Ryan Bohon
General Manager


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Mr. Bohon has been with Breckenridge Material Company since 2004.

Ryan started employment with Breckenridge as a Territory Representative, later moving to Sales Manager, Director of Sales, and most recently General Manager.

Ryan has responsibilities in every aspect including bidding, project management, production, job site quality control and general management duties for Breckenridge Material Company.

Mr. Bohon currently sits on the board of the Concrete Council of St. Louis and the Children’s Heart Foundation and also holds multiple industry certifications.

Ryan received his Bachelor of Science degree in Business Administration from the University of Missouri.

Todd Strother
Director of Dispatch


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Mr. Strother has over 33 years of ready mix experience in the local industry.

Todd has worked in all aspects of the industry, from quality control, field representative, sales, operations and dispatch.

Todd began in 1986, as a yard man for then, Kurtz Concrete of O’Fallon, which eventually became LafargeHolcim.

Todd spent 12 years as General Manager for American Ready Mix Company and joined Breckenridge Material Company in 2009.

Todd currently serves on the advisory board for the Missouri State University Customer Experience Program.

Todd currently serves as Dispatch Manager, in charge of overseeing day to day operations of the ready mix business.

Ryan Ruckel
Manager of Safety and Environmental


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Mr. Ruckel is a proud member of the BMC Enterprises family in St. Louis. Ryan has served as the corporate environmental, safety, and health manager since 2011; helping to develop an injury prevention program that actively involves all levels of employees, from the President to new hires.

Prior to BMC Enterprises, he implemented chemical management and compliance processes and software in the aerospace industry.

Ryan is a Kentucky native, an Air Force veteran, and former firefighter with more than 20 years of experience in corporate risk management, environmental protection, and emergency response.

George Anderson
Fleet Manager


Mr. Anderson has been with Breckenridge Material Company since 2004. Prior to joining BMC, he had been in the heavy-duty diesel and automotive repair/maintenance industry since 1988.

George is responsible for daily operations, maintenance and repair of all rolling stock, and purchasing of equipment within BMC Enterprises.

George received his degree in Diesel Maintenance Technology from Ranken Technical College in 1991 and has experience in all aspects of the diesel trucking industry.

Marilyn Gleason
Senior Director of Human Resources


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Ms. Gleason has 20 years of comprehensive human resources experience with a focus on talent management, compliance administration, employee relations, performance management, benefits administration, and change management.

Marilyn has a passion for helping employees realize their full potential, fostering long-lasting systemic results for the company. She believes in striving for excellence by utilizing best practices in all aspects of human resources.

Marilyn has held leadership roles in a variety of industries, such as manufacturing, service, production and marketing. She has been a member of The Society of Human Resources Management (SHRM) since 2004 and is a certified Senior Professional in Human Resources (SPHR).

Todd Barklage
Director of BMC Stone and Sand


Mr. Barklage has over 38 years in the ready mix and aggregate industry beginning at Kurtz concrete in 1981.

During this time Todd served every position at the ready mix company from batch man to plant manager.

LafargeHolcim purchased Kurtz Concrete during which Todd was promoted to Operations Manager and then again to Business Unit Manager.

Todd then left LafargeHolcim and opened his own quarry with a partner, and until 2013 ran his quarry, at which time he came to work for BMC.

Todd now serves as the head of BMC Stone and Sand, and is responsible for overseeing the entire production of BMC Enterprises aggregate business


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