Acacia Case Study

Acacia – Case Study

ACACIA


Acacia Mining plc is a UK public company with its headquarters in London. They are listed on both the London Stock Exchange and the Dar es Salaam Stock Exchange in Tanzania. Acacia has been operating in Tanzania for over a decade and during that time have produced over 9 million ounces of gold from our combination of open pit and underground mines, making them the leading gold producer in Tanzania.


Bulyanhulu



Acacia Case Study

Bulyanhulu is in north-west Tanzania, in the Kahama district of the Shinyanga region, approximately 55 km south of Lake Victoria and 150 km southwest of the city of Mwanza, a regional business and economic hub. Bulyanhulu is an underground mine with shaft and ramp access, which is transitioning to long-hole as its principal mining method. The process plant currently has capacity to process an average of 3,300 tonnes of ore per day, (or c. 1.1 million tonnes per year) and around 55% of production is via doré with 45% via a gold/copper concentrate.

MPPIglobal were engaged to support Bulyanhulu via the COO of Acacia. The scope of work covered general business improvement consulting services, asset optimization services and productivity and efficiency initiatives.


General Business Improvement


Business improvement services focused primarily on optimization of the underground fleet. Improvements in fleet utilization covering man to machine and improvements in maintenance and reliability activities. Organizational improvements were also implemented focusing on the workforce, meetings and structuring the work. Constraint models were developed, and improvements were focused on the underground bottleneck.

Asset Optimizations & Production OEE


MPPIglobal were engaged to identify, design and implement an Asset Optimization initiative to drive up production output across the operation. The Asset Optimization initiative included a blend of MPPIglobal Production OEE model coupled with the integration of supporting technology for automated real-time production improvement.


Process Plant


MPPIglobal designed, built and implement a fully integrated Production OEE model allowing the real time loss capture and quantification of all issues impacting maximum sustainable gold production.


Underground Hoist


MPPIglobal designed, built and implement a fully integrated Production OEE model allowing the real time loss capture and quantification of all issues impacting maxim ore delivery from underground to surface.


Tailings Recovery Process


MPPIglobal designed built and implement a fully integrated Production OEE model allowing the real time loss capture and quantification of all issues impacting maximum sustainable gold production for the retrieval and reprocessing of gold in tailings.