On November 11, 1977, about 30 tons of gunpowder exploded at Iri Station in Jeollabuk-do.

The main cause of the accident was the "safety insensitivity" of the truck convoy and the neglect of various regulations and principles.

The accident destroyed most of the houses and buildings less than 500 meters around Iri Station, killing 59 people and causing 6.1 billion won in property damage.

The largest explosion in Korea has shocked the entire Korean society, making it one of the top 10 news stories in Korea that year.