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Otdelnov's grandmother describes an explosion in the caprolactam plant in 1960 that killed 24 workers and never was made public.

It is also the largest single-site producer of caprolactam, which is used to make Nylon 6.

By 2005, driven by Chinese demand, the price of caprolactam had soared to $2,087 per ton—twice 2001’s level—and Capro’s caprolactam exports had more than quadrupled in value from the year before.

By 2015, China was producing each month 70% more synthetic resin, one of Korea Petrochemical’s main exports, compared to 2010, while its production of caprolactam nearly tripled, industry data shows.

Capro was particularly hard hit, with its caprolactam exports to China falling to virtually zero in 2013.