Eldorado Gold has opted to use Metso Outotec's filtration technology for dry stack tailings.
Eldorado is considering full underground mine electrification.
The HPGR project had been delayed for two months due to the COVID-19 pandemic.
Eldorado will continue exploration drilling with the aim of expanding reserves and resources.
New tunnel will cut costs of overground handling and haulage and allow cheaper exploration.
Mines in the Canadian province of Quebec will be allowed to reopen from April 15
The Quebec government has ordered the closure of all non-essential businesses due to COVID-19
Heap-leach tests and HPGR circuit give Turkish project 15-year mine life
Eldorado Gold has confirmed commercial production from the Quebec underground gold operation
Eldorado Gold has resumed heap-leach operations at its Kışladağ gold mine in Turkey
Eldorado Gold revises heap-leaching plan in Turkey
Canadian gold operation on track, according to owner Eldorado