'permanent' markers

Boyce Tankersley btankers@gmail.com
Fri, 16 Mar 2012 08:44:31 PDT
Hi Randy:

I am not sure where you live, but in climates with frequent freeze/thaw
cycles the use of engraved bricks is problematic.  We are noticing edges of
the brick flaking off around the edges of the letters.

Boyce Tankersley
Chicago Botanic Garden

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