PETERBOROUGH — When an explosion shook N.H. Ball Bearings Monday, injuring 15 people, one of the first calls emergency responders made was to the Keene Fire Department’s hazmat team.
Investigators believe a nitric acid reaction caused the explosion. Authorities said Tuesday they believe the explosion likely originated in a room where acid is used to surface-treat ball bearings.
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Kyle Jarvis can be reached at email@example.com or 283-0755. Follow him on Twitter @KJarvisKS.