Since we've discussed the issue of masonry here, I thought I'd alert folks to the new issue of NCPTT Notes, which has a nice little article "Evaluating Historic Masonry with the Pendulum Hammer." It summarizes a research project; the citation for the full report is in the article.
The article is on the web at http://www.ncptt.nps.gov/notes/30/5_fs.stm for those of you that don't receive the newsletter.
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Dan Becker, Executive Director "Conformists die, but
Raleigh Historic heretics live on forever"
Districts Commission -- Elbert Hubbard
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