Superfund Cleanup at Conway site: It’s back

CONWAY — The chemical treatment of the remaining pollution at the former Kearsarge Metallurgical Corp. Superfund site began Monday. The effort is expected to continue for the next few weeks. The site, next to Pequawket Pond, is where KMC made stainless-steel valves from 1964 to 1982. The KMC made stainless-steel castings for the nuclear power industry.