Two bombs weighing 500 kg were discovered in Tanchon City in May and July and dozens of bullets, fuses, etc. in various districts of Hamhung City.

Despite passage of time, explosives charged with powder were in dangerous condition that may go off any moment though they got rusty.

Dozens of materials of five kinds were newly displayed at the South Hamgyong Provincial House of Class Education this year.

Among them are a 150 kg dud bomb that was dug out of area around railroad of Hungnam Railway Station and a 50 kg time bomb that was planted in the bank of the River Songchon.

There are also materials proving atrocities committed by the U.S. imperialists and class enemies who sexually assaulted women in Joyang-ri, Hamju County before torturing and killing them as well as evidence proving that they killed hundreds of innocent people on a bridge between Yodok and Kumya counties.