Overview
Stage | Production |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Production Start | ...  |
Mine Life | 2042 |
Bulghah’s open pit oxide grade ore is processed on site by Heap Leach Processing, while higher grade ore is transported by trucks to the Sukhaybarat plant to produce Dore. |
Source:
p. 19,48
Ma’aden Gold and Base Metals company (MGBM) is a wholly owned subsidiary of Maaden Saudi Arabian Mining Co. (Ma’aden), operates five gold mines, i.e. Mahd Ad-Dahab, Al-Amar, Bulghah, As-Suq and Ad-Duwayhi and a processing plant at Sukhaybarat.
Contractors
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Deposit Type
- Vein / narrow vein
- Mesothermal
Summary:
Geology.
The Bulghah deposit lies within Pre-Cambrian rocks of the Arabian Shield, located in the western part of the Arabian Peninsula. Gold mineralisation is predominantly hosted by mesothermal gold veins, often associated with a 680Ma to 640Ma orogeny that amalgamated various terranes into the Arabian Shield. Gold is also associated with a 615Ma phase of diorite-granodiorite magmatism in the north-eastern Shield, and post 640Ma strike-slip faulting in the Najd fault system.
Gold mineralisation at Bulghah is hosted by a tonalite/diorite intrusion, which strikes roughly north-south. The tonalite/diorite intrusion is fault/shear bounded on the east and west sides, with the contacts dipping roughly 60° towards the east. The intrusion ranges from 200m to 500m wide, narrowing towards the south, and extends to the north and south for approximately 1,000m with a depth of about 450m. The intrusion is bounded to the east by meta-volcanics, primarily andesite, and by meta- sediments to the west. The meta-sediments include a distinct marble unit. The intrusion grades from tonalite to diorite in the southeast and northern parts of the project area. The diorite has a coarser texture, with hornblende and plagioclase phenocrysts in a light coloured matrix. The intrusion is cross- cut by numerous aplite dykes, which are sub- horizontal, and frequently have irregular geometries. The aplite dykes also occur on or near the contacts between the country rock and the intrusion.
Summary:
Mining operations at Bulghah comprise open-pit mining.
Mine access to the open-pits (Bulghah & Sukhaybarat Mine) is via a single haul road developed to each of the four pits with pit No.1 extending from surface to 830m amsl, some 120m below surface. The open-pits are designed with the following parameters: 18m wide ramps at a gradient of 10% and overall slope angles ranging from 32° to 52°. Final slopes are geotechnically domained and include batter angles ranging from 45° to 75°, berm widths from 10m to 20m and face heights from 15m to 20m. All cut-backs and pit base widths are established at a minimum of 30m.
Mining methods comprise standard drill-blast-load- truck. Mining occurs by drilling and blasting 5m high benches with 102mm blast holes. Loaders with 5.6m3 bucket capacities load blasted ore and waste into 41t rear-dump haul trucks. Additional service equipment comprise graders, tracked dozers, water trucks and general service vehicles.
Source:

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Flow Sheet:
Summary:

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Production:
Commodity | Units | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
Gold
|
oz
| ......  | ......  | ......  | 36,972 | 58,369 | 56,069 |
All production numbers are expressed as metal in doré.
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Operational Metrics:
Metrics | 2017 | 2016 | 2015 | 2014 | 2013 |
Ore tonnes mined
| 3,611,503 t | 2,837,949 t | 2,436,967 t | 2,363,286 t | 2,399,867 t |
Waste
| 4,747,824 t | 4,429,822 t | | | |
Tonnes milled
| 3,910,039 t | 2,795,148 t | 2,693,711 t | 2,161,606 t | 2,048,164 t |
Reserves at December 31, 2021:
Category | Tonnage | Commodity | Grade | Contained Metal | Recoverable Metal |
Probable
|
33 Mt
|
Gold
|
0.86 g/t
|
0.91 M oz
|
0.48 M oz
|
Indicated
|
42.5 Mt
|
Gold
|
0.9 g/t
|
|
|
Inferred
|
10.8 Mt
|
Gold
|
0.9 g/t
|
|
|
Total Resource
|
53.2 Mt
|
Gold
|
0.9 g/t
|
1.55 M oz
|
|
Financials:
| Units | 2017 | 2016 |
Capital expenditures
|
M SAR
|
|
|
Revenue
|
M SAR
|
278.4
|
263.2
|
Gross profit
|
M SAR
|
|
|
Corporate Filings & Presentations:
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