• Article appearing in Professional Surveyor Magazine - March  2007
  This article highlights Herrick & Salsbury's work with the environmental cleanup of a former mine site in Blue Hill, Maine.  Please also see the interview listed below for more information on this project. 
  
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• Interview with David Critchfield, President of Emsource, Inc. (see Episode 21) in which he discusses environmental cleanup of a former mine site in Blue Hill, on which Herrick & Salsbury has also worked.  Herrick & Salsbury's work on this site was also featured in the above article.