What started as routine drilling ended in a geological nightmare. Lake Peigneur collapsed into the ground, swallowing barges, land, and a massive drilling rig—leaving behind Louisiana’s deepest lake.

Last year, a worker in their 60s died after being caught in construction machinery at a site on the Hamyang-Ulsan Expressway in Uiryeong County, Gyeongnam Province, which was under construction by ...