Customer Education Days


Keith Ehmke
Territory Manager – Upper Midwest | Alliance Designer Products Inc.

Keith is a graduate Landscape Architect and a former Landscape Contractor. He has spent 6 years working for 2 smaller companies and for himself, eventually leading to working at 2 of the top landscape firms in Wisconsin for 9 years each.  He has extensive experience with designing, selling and supervising landscape projects.

Currently, he is based in Minneapolis working as the Upper Midwest & Central Canada Territory Manager for Alliance Designer Products. He looks forward to being an advocate and resource for vendors and contractors that he works with.

Cory Epp
Director of Finance | Barkman Concrete

Cory Epp has been Barkman’s Director of Finance for the past 6 years and is a designated CPA,  Chartered Professional Accountant. At Barkman, Cory is a member of the Executive team and is primarily responsible for providing financial analysis and reporting as well as offering strategic recommendations that help drive business success.

John Nemeth
National Account Manager | Great North Hardscape

John brings a tremendous amount of hardscape industry experience. He focuses on assisting manufacturers, dealers and professional hardscape installers on-site.

He continues to work closely with engineers and fabricators to bring the latest and greatest hardscape innovations to life, matching on-site needs with hi-tech solutions. Together with a supportive team of professionals, Great North Hardscape delivers superior industry-leading products, comprehensive training, expert technical support and personal coast-to-coast service to the hardscape industry.

Keith Miller 
Technical Services Specialist  | Keystone Retaining Wall Systems, LLC

Keith has 15+ years of experience working with segmental retaining walls and geosynthetic reinforcements.  Keith has worked in the segmental retaining wall industry in a variety of roles including engineering design, technical support and sales, product development and promotion.  He has worked on various committees at NCMA and ASTM and has worked with multiple DOT’s on the implementation of segmental walls into their approved product list

Wayne Patram
Product Development Manager | Barkman Concrete

Wayne Patram manages Barkman’s Product Development Department. The department is responsible for all of the new products that Barkman launches and works at keeping Barkman at the forefront of the precast concrete industry.

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