Splitting the Sinking Ground

XuchangCoal mining caused 62.4% of this ground’s sinking, 2018-2020, researchers found.

One driver is compensable and traceable to an operator, unlike the other, which belongs to no one.

Mined-out seams collapse fast, while pumped aquifers compact clay slowly and permanently.

Researchers say no new large subsidence funnel will form here within five years.

Sources: Nature