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Published January 25, 2013, 12:00 AM

Damaged battery cell case


National Transportation Safety Board’s Joseph Kolly, holds an opened damaged battery cell case from the Japan Airlines Boeing 787 Dreamliner that caught fire at Logan International Airport in Boston on Jan. 7, at the NTSB laboratory in Washington, Thursday, Jan. 24, 2013. In the foreground is the casing that holds 8 cells of batteries. The battery that caught fire in Boston shows evidence of short-circuiting and a chemical reaction known as "thermal runaway," in which an increase in temperature causes progressively hotter temperatures, federal accident investigators said. However, it's not clear to investigators which came first, the short-circuiting or the thermal runaway. (AP Photo/Manuel Balce Ceneta)
Read the article: From the start, Dreamliner jet program was rushed