marked face of the Zenith 3 firebrick

Brand Name: ZENITH / 3

Company: Zenith Clay Products

Brickyard Location: Ione, Amador County, CA.

Operating Years: 1980s

Years Brick Made: 1980s

Type: Super-Duty Firebrick

Description: Number 3 arch brick. Company's name is impressed within a shallow round-rectangular name plate outline. Number 3 in a shallow circle outline is impressed below name.

Source: California Division of Mines and Geology, Special Publication 58, 1981.

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