Its all Mi-8s there or was until recently. It has been hard to find any company good enough to provide any support to the mining industry.
There were 3 companies operating MI-8s but they were all very financially shaky and seemed to change name and ownership. Maintenance seemed to be skipped and aircraft logbooks amended with tippex.
I am not aware of any light helicopters there and I wouodn't fly in anything that I saw from the 3 companies.