Marked face of the DIA D firebrick
Photo courtesy of Steve Curtiss

Marked face of the DIA D firebrick
Example of a double-struck marking. Photo courtesy of Jack Bower

Brand Name: DIA-D

Company: Gladding, McBean and Company

Brickyard Location: Pittsburg, Contra Costa County, CA

Operating Years: 1943-1962

Years Brick Made: 1943-1962

Type: Firebrick

Description: Brand name impressed within a rounded rectangular name plate.

Comments: For more information, see under "Brickmakers" the Gladding, McBean and Company, Pittsburg.

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