Concerns about a collapsing iron mine near I-80 East caused the state DOT to hire a contractor in 2009 to shore up the old Huff mine in Wharton, next to the highway and Exit 34.

modified drainage and surface water diversion as reasons for subsidence. More commonly, sinkholes develop when highly soluble rocks like chalk or limestone dissolve after reacting with acidic ...

DEHRADUN: Residents of Jyotirmath in Uttarakhand are once again gripped by fear as fresh sinkholes and submergence threaten ...