1996

The Butner location opens a ready-mixed concrete plant.

1993

Sunrock acquires its Durham location known as Muirhead Distribution Center (MDC).
Sunrock constructs a hot mix asphalt and ready-mixed concrete plant at its Durham location.

1990

Lancaster Stone opens its first sand and gravel operation in Machias, New York, going back to the original Pfohl Brothers line of business that started it all.

1991-1993

Bryan Pfohl serves as President of the North Carolina Aggregates Association.

1989

The Butner quarry introduces its rapid rail load-out system. The innovative system allows the quarry to service a 50 – 60 unit car train in three hours.  This advance load-out system, along with access to the Norfolk Southern rail lines, allows Sunrock to delivery crushed stone products and industrial materials to customers east of the Mississippi.

1985

Bryan Pfohl decides to expand into the southeastern U.S. by opening a quarry in Butner, North Carolina, a small town outside of the Raleigh-Durham area. The organization is named Sunrock Corporation.

1980

Bryan M. Pfohl, son of Joseph J. Pfohl, becomes President and Chairman. He grows the business in western New York. At present, Lancaster Stone operates two quarries and four hot mix asphalt plants.

1973

Lancaster Stone opens its second quarry in Alabama, New York.

1966-1969

1966

A third hot mix asphalt plant is opened at the Barton Road Quarry.

1969

Lancaster Stone invests in the first hot mix asphalt storage system in upstate New York.

1957-60

Lancaster Stone Products Corporation is formed when the Pfohl Brothers open their first quarry in Buffalo, New York.
1957-60
Lancaster Stone establishes a crushing plant and two hot mix asphalt plants on site at the Barton Road Quarry.

1949

Following WWII, Pfohl Brothers Sand & Gravel is founded by Joseph, Fidelis and Paul Pfohl in Buffalo, New York. The brothers see the opportunity present in post-war America and set out to achieve the American Dream.