Hans Goos begins dredging Mississippi River sand and gravel in Davenport, IA.

Hans Goos is a key material supplier for the construction of the Rock Island Arsenal.

John Henry Hahn purchases property off Stewart Road in Muscatine

Hahn Bro's Commission Merchants begins as an agricultural sales company in Muscatine, founded by John Henry Hahn, George Hahn, and Henry Hahn.

W.G. Block is founded in Davenport, IA as a coal and Ice supplier.

Hahn Bros enters the lumber business, and then exits by 1895.

Hans Goos and his son incorporate their company, Builders Sand & Gravel

Builders Lime & Cement Co formed, backed by P.T. Walsh Construction, McCarthy Stone Co. and Hans Goos Jr.

Hahn Bro's, Inc. is the largest supplier of cabbage to the U.S. military in WWI.

Hahn-Muscatine Corporation formed in partnership with three individuals from Chicago. After failing to provide the promised capital, the Chicagoans were sued by the family in 1921, and the company fell into receivership.

Henry Hahn and family start dredging sand from the family farm under the name Hahn Bro's Sand & Gravel. At some point, Robert Hahn invents the world's first roller-bearing mounted centrifugal sand pump, and refuses to patent it.

Builders Sand & Gravel, Builders Lime & Cement acquired by Miss Ethel Delarue.

W.A. Grunder's founded as a contracting firm in Wilton, IA

W.G. Block in Ready Mix Industry

Edwards Ready Mix founded in Geneseo, IL.

Walter Hahn, Robert Hahn and his son Tom set up Hahn's first ready mix concrete batch plant in Muscatine.

Mercer County Ready Mix Incorporated with locations in New Windsor and Aledo

Grunder & Sons Ready Mix purchase West Liberty Plant from Pantel's Ready Mix

After Miss Delarue's passing, Builders is sold to Alter Corp. who combine the companies into Builders Sand & Cement

Hahn Bros Sand & Gravel reincorporates as Hahn Ready Mix

Tom Hahn sets up Hahn's first automated batch plant in Muscatine.

Hahn Ready Mix acquires Grunder & Sons Ready Mix with locations in West Liberty, Wilton, Durant and Walcott.

Hahn acquires Mercer County Ready Mix in Aledo, IL.

Alter Corp sell Builders Sand & Cement to Ira Weindruch.

Hahn sets up their first portable batch plant to service the construction of the IPSCO Steel Plant in Blue Grass, IA. The project consisted of over 90,000 cubic yards of concrete.

W.G. Block completes Davenport River Plant.

Builders Sand and Cement acquired by Brian Hahn.

Builders Sand & Cement relocates to West Davenport, opens West Davenport Plant

W.G. Block Co. and Edwards Ready Mix acquired by Brian Hahn.

Block Ready Mix Group And Builders Sand & Cement merged into Hahn Ready Mix.

Hahn Ready Mix is selected to supply the concrete for the new I-74 Bridge in the Quad Cities. Hahn supplied over 215,000 cubic yards to the project over four and a half years.

The I-74 Bridge project and Hahn team wins the International ACI Excellence in Concrete Award for top Infrastructure Project.