The project is owned and operated by Sunridge Gold. There are 4 advanced deposits, the Gupo (gold), Debarwa (Cu-Au), Adi Nefas (Zn-Cu-Au) and the Emba Derho (Cu-Zn-Au). A feasibility study completed on the project has average annual production of 65Mlb Cu, 184Mlb Zn, 42koz Au and 1Moz Ag.
The Asmara project consists of four VMS deposits: the Debarwa deposit 25km south of Asmara, and the Northern deposits (Emba Derho, Adi Nefas and Gupo Gold) located 15km north of Asmara.
A feasibility study was completed in May 2013 and amended in 2014. The study estimated a mine life of 17 years with average annual production of 22kt Cu, 50kt Zn, 26koz Au and 665 Koz Ag.
In Q2 2016, Sunridge Gold Corp sold their 60% interest in the Asmara Mining Share Company (AMSC) which owns the project to Sichuan Road & Bridge Mining Investment Development Corp. Ltd (SRBM) for US$65 million in cash, $13.33 million in deferred payments owned to Sunridge from the Eritrean National Mining Corporation (ENAMCO).