Brand name: MRCo / 4 66
Company: Mexico Refractories Co.
Location: Mexico, Missouri.
Years: 1929-1959 (company active)
Type: Circle firebrick
Description: Brand name impressed into the face. MRCo on the first line and letters are space out, 4 66 are on
the second line. From the collection of James Freedner.
References: Graves, Jim, Brick Brands of the United States, 2003; ; Krause, Corinne A., Refractories: The Hidden Industry, American Ceramic
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