Obuasi, Ghana

Obuasi is wholly-owned by AngloGold Ashanti and is a production stage property. The mine has been in operation for more than 120 years with AngloGold Ashanti taking ownership in 2004.

Key metrics FY25

Ownership

100%

Mineral Reserve at 31 December 2025

7.06

million ounces of gold

Gold production

266,000

ounces

Mine type

underground

Capital expenditure

209

US$ million

Workforce

5,566

including contractors

Location

The mine is in the municipality of Obuasi, in the Ashanti region of Ghana, about 240km northwest of the capital, Accra, and 60km south of Kumasi.

Mining methods and key infrastructure

The mine is largely an underground operation with both underground and open pit Mineral Resource. The underground operation utilises both vertical shafts and declines as main access routes to the underground workings. The current LOM design employs mostly the long hole open stoping (“LHOS”) mining method for ore extraction. LHOS is a highly selective and productive method of mining that can be employed for orebodies of varying thicknesses and dips. Obuasi has successfully trialled the underhand drift and fill (“UHDF”) mining method, intended to be applied in areas of poor ground conditions, typically associated with high-grade areas.

Existing infrastructure includes a 2.2Mtpa processing plant with flotation and bacterial oxidation (“BIOX”), extensive underground development, hoisting shafts and associated infrastructure, mine ventilation and refrigeration facilities, emergency standby power and water reticulation, office complexes, workshops, and company housing estates. There is a focused mine development plan supported by the existing infrastructure, and ongoing upgrades of critical underground infrastructure to sustain the operations. The mine can be accessed by paved road network from Kumasi and by road or chartered air transport from the capital, Accra.