In June 2013, heavy rains provoked the collapse of the mine, killing 37 miners and injuring many others.[3] On August 22, 2014 the mine collapsed again killing at least 25 people.[4]
Wagner Group took over the mine around 2017, and the mine's owners Axmin reported being notified that their permit to operate the mine was cancelled in 2019.[2] Shortly later the company reported that Midas Ressources was awarded their operating license.[2] Midas brought in heavy equipment and turned the mine into the nation's first industrialized gold mine.[2]
In 2021, in Boyo, Wagner Group fighters massacred villagers who were perceived to be aligned with the UPC.[2]
On 10 February 2021 government forces recaptured the mine.[5] Two days later UPC launched an attack on Ndassima which was repelled by army forces with help from Russian mercenaries.[6] Legal ownership of the asset remains in dispute and Axmin still holds the mining convention pending resolution at law.[2]