Our Staff

Gerry Hamann, President and Owner

Gerry Hamann founded MGA CAST STONE, INC. in 2000. Having started the business as a one man operation working out of his home garage, his spirit for entrepreneurship and desire for a high quality product has transformed the company and it's people into what it is today. Gerry developed, and is personally involved in MGA CAST STONE, INC's. quality control and assurance program, which are the vital building blocks to MGA CAST STONE'S success.

Gerry has 20 plus years in the commercial masonry trade as well as nine years in the concrete Industry. Gerry brings the field experience and knowledge of how products are used, applied and viewed, which keeps MGA Cast Stone a top performer.

Greg Hamann, Production Manager & Estimating

Greg Hamann brings over 8 years of construction management, sales, estimating and masonry trades to MGA CAST STONE, INC. Greg is involved in daily production operations and management of our production team. He is also involved in our quality assurance and quality control program in further development and continued monitoring on a daily basis.

Greg brings to us a broad knowledge of commercial construction with an understanding of the commercial masonry trade and the precast industry having worked in growing MGA CAST STONE, INC with his father. Graduate, ST. Anselm College, Businesss.

Eric Hallgren, Finishing and Shipping Manager

Eric Hallgren brings 10 years of industry experience to MGA CAST STONE, INC. He is one of the top rated precast finishers in New England. Eric brings a wealth of hands on knowledge in both detailing and shipping. His expertise has helped MGA Cast Stone in having a zero percent product reject as well as zero percent shipping breakage.