

Brand name: DIABLO-D
Company: Gladding, McBean and Co.
Location: Lincoln, Placer County, or Pittsburg, Contra Costa County, CA
Years: 1931-1958
Type: Fire brick, refractory brick
Description: Brand name impressed within a rounded rectangular name plate.
Equipment: Stiff-mud, dry-press, hand-mold
Deposit: Ione clay pits, Amador County, and Lincoln, Placer County.
Comments: This brick was photograph in the kiln at the Lincoln plant, Placer County, where it could have
been made. However, DIABLO brand fire brick were known to be made at the Pittsburg plant in Contra Costa
County, CA.
Source: Directory of the Refractories Industry, 1942; California Division of Mines and Geology v. 47, no. 4, 1951;
California Division of Mines and Geology v. 54, no. 4, 1958.
Comments or questions are welcomed.
Please send email to Dan Mosier at danmosier@earthlink.net.