1952
Glenn O. Hawbaker and his wife Thelma founded a small excavation company acquiring equipment from Glenn's
brother Alvin, a local developer. They contracted with local
State College builders and developers in a growing community. As the decade progressed, the company took on bigger projects, including excavation for some of the larger apartment complexes in State College.

1965
The Glenn O. Hawbaker company was officially incorporated in the state of Pennsylvania.

1966
Glenn's son, Daniel R. Hawbaker, joined the company after serving in the military and completing his education at the University of Maryland.

1974
The Pleasant Gap asphalt plant was added to the company expanding the paving products business as the company became larger and more integrated. Through the 1970s, the company acquired and expanded its fleet of construction equipment in order to take on larger scale projects while maintaining its core businesses.

1978
Daniel Hawbaker took over the Presidency of the company from his father who "retired" to manage his many interests and continue in an advisory role to the company.

1983
An aggregate processing plant was built in Pleasant Gap, PA, which added another dimension to the company by further expanding its products and capabilities.

1988
Daniel and his brothers Alan and Glenn Jr. purchased the quarrying operations of Marblehead Lime Company of Pleasant Gap, PA. This formed Centre Lime & Stone, adding substantially to the aggregate reserves available to GOH.

1989
The Dubois regional operations were established, including regional management as well as asphalt production capability.

1994
Asphalt and quarrying operations opened in Turtle Point, PA.

1997
GOH added a quarry and aggregate processing facility in Sandy Ridge, PA.

1998
GOH acquired the assets of George E. Logue, Inc. of Williamsport, PA. This established another regional operations center in Montoursville, PA to serve the north-central Pennsylvania area extending into New York.

1999
GOH opened the Hagerman's Run quarry and aggregate processing facilities south of Williamsport, working cooperatively with its asphalt production plant in Montoursville.

2000
An aggregate mining facility and asphalt production plant began in Milroy, PA to service the Mifflin County, PA markets.

2001
GOH moved into a newly constructed office building in State College, designed with modern technology in mind to facilitate the continuing growth of the company. This building houses the centralized corporate operations.

2001
An aggregate quarry in Erwin, New York was opened establishing the first operations outside of Pennsylvania.

2002
GOH created a subsidiary business, Hawbaker Construction Services, which provides design and consulting services to customers for site planning, government approvals and professional engineering services.

2006
An operations center was established in Grove City, PA to manage and service the western regions of Pennsylvania.

2007
Aggregate crushing and processing operations opened in Hazelton, PA.

2007
An asphalt plant was constructed and put into production in Grove City in western Pennsylvania.

2007
GOH currently operates 17 quarries and 8 asphalt production facilities across Pennsylvania and southern New York, as well as 4 regional operations centers.