Watch jobs in this category

Search results for "". Page 1 of 1, Results 1 to 10 of 10
Title Location Date Sort descending
Reset
Land Manager -Las Vegas, NV
Land Manager -Las Vegas, NV Greenwood Village, CO, US, 80111 Environmental Management
Greenwood Village, CO, US, 80111 May 12, 2024
Fire and Rescue Brigadesman
Fire and Rescue Brigadesman GH Emergency Services
GH May 11, 2024
Senior Geologist -Beatty, NV
Senior Geologist -Beatty, NV Greenwood Village, CO, US, 80111 Mine Geology
Greenwood Village, CO, US, 80111 May 11, 2024
HSE Officer-Projects
HSE Officer-Projects GH HSE Strategy & Governance
GH May 10, 2024
Geologist 1- UG GC Evaluation
Geologist 1- UG GC Evaluation TZ Geochemistry
TZ May 9, 2024
Sr. Project Metallurgist -Las Vegas, NV
Sr. Project Metallurgist -Las Vegas, NV Greenwood Village, CO, US, 80111 Metallurgical Lab
Greenwood Village, CO, US, 80111 May 8, 2024
Community Relations Manager -Beatty, NV
Community Relations Manager -Beatty, NV Greenwood Village, CO, US, 80111 Community Relations
Greenwood Village, CO, US, 80111 May 8, 2024
SVP Group Controller -Denver, CO
SVP Group Controller -Denver, CO Greenwood Village, CO, US, 80111 Financial & Technical Accounting
Greenwood Village, CO, US, 80111 May 8, 2024
Superintendent 2- Social & Economic Development
Superintendent 2- Social & Economic Development TZ Sustainability Management
TZ May 7, 2024
Officer 2 - Investigation
Officer 2 - Investigation TZ Security Operations
TZ May 6, 2024

GUINEA

Siguiri  - Siguiri is a multiple open-pit gold mine in the relatively remote district of Siguiri, around 850km northeast of the country’s capital, Conakry.

Overview and Locality

Siguiri is AngloGold Ashanti’s only operation in the Republic of Guinea. The mine is 85% owned by AngloGold Ashanti and 15% by the government of Guinea. Siguiri is currently a multi-pit fresh rock and oxide gold mining operation, mined by a contract miner. The mining method is selective conventional mining using excavators and trucks on 3m high flitches with gold-bearing ore mined from several pits (generally three pits at any one time).

A Brief History

First gold mining can be traced back to the first great West African Empire, the Sarakolle Kingdom Between 1931 and 1951, the French reported gold coming out of Siguiri, with figures varying between 1 and 3.8t annually There was a phase of Russian exploration in the area between 1960 and 1963. The Russian work focused on the placer deposits along the major river channels in the area. In 1980, Société Minière Internationale du Quebéc (SOMIQ) gained the exploration rights for Siguiri and Mandiana. SOMIQ focused its work on the Koron and Didi areas. The Chevaning Mining

GUINEA

Siguiri  - Siguiri is a multiple open-pit gold mine in the relatively remote district of Siguiri, around 850km northeast of the country’s capital, Conakry.

Overview and Locality

Siguiri is AngloGold Ashanti’s only operation in the Republic of Guinea. The mine is 85% owned by AngloGold Ashanti and 15% by the government of Guinea. Siguiri is currently a multi-pit fresh rock and oxide gold mining operation, mined by a contract miner. The mining method is selective conventional mining using excavators and trucks on 3m high flitches with gold-bearing ore mined from several pits (generally three pits at any one time).

A Brief History

First gold mining can be traced back to the first great West African Empire, the Sarakolle Kingdom Between 1931 and 1951, the French reported gold coming out of Siguiri, with figures varying between 1 and 3.8t annually There was a phase of Russian exploration in the area between 1960 and 1963. The Russian work focused on the placer deposits along the major river channels in the area. In 1980, Société Minière Internationale du Quebéc (SOMIQ) gained the exploration rights for Siguiri and Mandiana. SOMIQ focused its work on the Koron and Didi areas. The Chevaning Mining

 

Company Limited was then created to undertake a detailed economic evaluation of the prospect, with more intensive work beginning in the late 1980s. Société Aurifere de Guinea (SAG) took over from its predecessors and continued work on the placer deposits. Production on the Koron placer reached a peak in 1992 with 1.1t gold being produced, although due to a number of difficulties, the mine was shut down later that year.

In the mid-1990s, Golden Shamrock acquired and operated the project as an open pit and heap leach. In October 1996, Golden Shamrock was acquired by Ashanti Goldfields Corporation which operated Siguiri as a heap leach until 2004. Ashanti Goldfields Corporation merged with AngloGold Limited in 2004 to become AngloGold Ashanti. AngloGold Ashanti completed the design and construction of the 8.5Mtpa saprolite soft rock treatment plant and commissioned it in 2005. This was later increased to 12Mtpa.

A Siguiri combination plant feasibility study, based on the requirement to process fresh and transitional material in combination with existing oxide material, was completed in 2015. The combination plant conversion project began in 2017 to allow the mine to treat 6Mt of hard fresh rock ore and 6Mt of oxide ore. Construction was completed in March 2018 and further optimisation and debottlenecking of the plant continues.

 

Company Limited was then created to undertake a detailed economic evaluation of the prospect, with more intensive work beginning in the late 1980s. Société Aurifere de Guinea (SAG) took over from its predecessors and continued work on the placer deposits. Production on the Koron placer reached a peak in 1992 with 1.1t gold being produced, although due to a number of difficulties, the mine was shut down later that year.

In the mid-1990s, Golden Shamrock acquired and operated the project as an open pit and heap leach. In October 1996, Golden Shamrock was acquired by Ashanti Goldfields Corporation which operated Siguiri as a heap leach until 2004. Ashanti Goldfields Corporation merged with AngloGold Limited in 2004 to become AngloGold Ashanti. AngloGold Ashanti completed the design and construction of the 8.5Mtpa saprolite soft rock treatment plant and commissioned it in 2005. This was later increased to 12Mtpa.

A Siguiri combination plant feasibility study, based on the requirement to process fresh and transitional material in combination with existing oxide material, was completed in 2015. The combination plant conversion project began in 2017 to allow the mine to treat 6Mt of hard fresh rock ore and 6Mt of oxide ore. Construction was completed in March 2018 and further optimisation and debottlenecking of the plant continues.