State of Pyrrhotite Research in the US
In recent years, some concrete cracking at the foundation level of homes and commercial buildings in Connecticut has been associated with Pyrrhotite*. As a result, state legislation has been put forward to protect homeowners and federal funding has been provided for research. Massachusetts is also looking to adopt policies over concerns with Pyrrhotite. In the absence of direct and practical quality control tests to detect and measure Pyrrohtite concentration in aggregates, some of the proposed policies can negatively affect aggregate producers.