Another good resource is the National Brick Research Center at Clemson
University. They study the physical and chemical composition of bricks and
do testing/research on historic bricks. A couple of my colleagues worked
with the center a year ago to make bricks that would approximate the bricks
present at Fort Sumter. All of which is to say, there are people there
interested in the structure of historic building materials, and they might
well be able to provide some answers and recommendations.
https://www.brickandtile.org/

-- 
Rebecca Bush
Curatorial Assistant, Historic Columbia Foundation
M.A. Student in Public History
University of South Carolina
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(620) 388-2232

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