1995 Daegu gas explosions

The 1995 Daegu gas explosions was a gas explosion that occurred at Taegu Metro Line 1, a construction site located in Sangin-dong, Taegu, South Korea, on 28 April 1995. At least 101 people, including 42 Yeoungnam Middle School students, were killed with as many as 202 people injured.
Overview.
The event occurred on April 28, 1995 at 7:52 a.m. in the underground construction site of the 2nd Section of the Sagley Subway Line 2 at Nam High School in Sangin-dong, Dalseo-gu, Daegu Metropolitan City. Construction work at the Daegu branch (대구점) of the Lotte Department Store in Buk-gu, Daegu, where 31 holes of 75 millimeter width that were going through a grout curtain were accidentally drilled through a city gas pipeline and resulted in gas leakages into the subway construction site through a nearby sewer, leading to the explosion triggered by an unknown fire at the site. The explosion created a 50-meter pillar of fire. The accident killed 101 people, including 42 students, and injured 202. The 400-meter-long private parking lot on the construction site collapsed, and 60 buildings and 152 cars were damaged and the damage reached 54 billion won.
Result.
The damage caused by the accident occurred during the school day.
Aftermath.
The Ministry of Health, Labor and Welfare, which was set up to deal with the incident, discovered that it was an accident caused by negligence in the development of the Daegu Department Store, and arrested nine employees of the company on charges of business misconduct. Of course, excavator operation was also included.
This accident led to the necessity of computerized capitals for underground cargoes, the criticism of the authorities on safety management administration, the increase of the voice of the government and the public on the improvement of the emergency rescue system and integrated structure system, A countermeasure mechanism was established centering on the revision of related laws such as city gas business law.
Controversy.
One housewife claimed to have reported the smell of gas four hours before the accident, but that night she said "I wanted to be on TV and lied".
Hashan Park Memorial Tower.
There is a monument in Wolsung - dong Hashan Park in Dalseo - gu, Daegu Metropolitan City .
On April 28, 2005, the last memorial service was held. The memorial ceremony was the last official memorial ceremony on this day. At the ceremony, about 500 people including family members and citizens attended the ceremony and prayed for the victims' souls.