A sultry early-summer day was just starting to fade, when a deafening bang reverberated throughout Gangnam, Seoul. Half of Sampoong Department Store, the pink-color, two-building complex that had stood as a landmark of the affluent Seocho-gu neighborhood, was gone, leaving behind scenes of ruins, debris and dust. The June 1995 collapse killed 502 people and injured 937 others, making it the largest peacetime casualty...