Concrete Testers Under Criminal Investigation

08/14/2009 05:12 am ET | Updated May 25, 2011
  • WILLIAM K. RASHBAUM New York Times

Early last year, Manhattan prosecutors concluded that the New York area's largest concrete testing company, Testwell Laboratories, had been systematically falsifying its results on many public and private construction projects. Now the firm chosen to replace Testwell is also under criminal investigation, suspected of having falsified reports and engaged in other improprieties.

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