Table 3.

Surface collapse pits in the hanging wall

Pit number	Time of appearance	Location	Area, width, and depth
I	April 2007	Near mining site MC2	250 m2
II	September 2008	Near mining site MC3	620 m2
III	April 2017	Near exploratory lines 38/38-1	Diameter 6 m; depth 3 m
IV	April 2018	Near exploratory lines 34-1 to 36	Diameter 20 m
V	November 2018	Near exploratory lines 30-1 to 32	Diameter 18 m; depth 10 m
VI	June 2019	East of collapse pit IV	Diameter 5 m; depth 5 m

Surface collapse occurred again in the vicinity of collapse pit nos. II and I in February and May 2013, respectively. A new pit appeared in collapse pit no. II on June 2019