FLAGSHIP
We have worked on more than 1500 projects and with a significant number of different clients since our inception in 2003.
Our track record and superb industry relationships speak for themselves, as does our commitment to excellence and work set to the highest standards.
Geotechnical DFS & Instability Assessment – Platinum Underground & Open-Pit Mine, South Africa (2023)​
In 2023, Middindi was appointed to deliver the geotechnical component of a Definitive Feasibility Study (DFS) for proposed underground bord-and-pillar mining at an existing platinum operation. The study focused on extracting multiple reef packages (8–20 m apart) separated by waste interburden.
The scope included geotechnical data review, logging and scanline mapping, rock strength testing, and boxcut design.
In the same year, Middindi also conducted a highwall instability assessment for the client’s open-pit operation, using 3D numerical modelling to analyse failure mechanisms, determine the zone of influence, and recommend long-term stabilisation measures.
Geotechnical Pit Slope Engineering Feasibility Study - Copper and Cobalt Open Pit Mine, DRC (2024)
In 2024, Middindi was commissioned to undertake geotechnical data acquisition and pit slope engineering studies for eight open pits across two mining operations in the DRC.
The scope included the derivation of pit design sectors based on lithological and geotechnical variations, numerical analysis of overburden materials, kinematic assessment of structurally controlled failure mechanisms, and overall slope stability analyses. Bench configurations were optimised to mitigate rockfall risk, and both deterministic and probabilistic methods were applied to refine slope design parameters. The influence of groundwater on slope performance was also evaluated.
This comprehensive approach ensured technically robust and risk-informed slope design recommendations.
Pillar Reclamation Study – Platinum Bord-and-Pillar Mine, Zimbabwe (2023 - 2025)
Middindi Consulting was commissioned to assess the potential for pillar reclamation within a mechanised bord-and-pillar platinum mining operation in Zimbabwe.
The scope was structured into three progressive phases: a Concept Level Study to evaluate viability, followed by Pre-Feasibility and Feasibility Studies to refine technical parameters and support informed decision-making.
The assessment combined advanced numerical modelling (MAP3D and UDEC), underground site investigations, and rock mass sampling to develop a comprehensive understanding of stability conditions and the viability of safe pillar reclamation.
Third-Party Verification for Litigation Support – Open-Pit Mine, Brazil (2023)
Trevor Rangasamy was invited to join a panel of experts for a high-level review of a pit design to support and inform the technical and legal teams on the geotechnical aspects of the mining operation.
The scope of work was structured into three phases. Phase 1 involved a comprehensive review of existing geotechnical data, reports, and supporting investigations to establish a clear technical understanding of site conditions. Phase 2 focused on evaluating the geotechnical inputs informing the pit design, including stability considerations and remediation measures. Phase 3 provided ongoing specialist support through additional analyses, technical input, and expert guidance to assist with risk evaluation, damage assessment, and decision-making.
This integrated approach ensured an objective, evidence-based assessment to support both technical planning and legal processes.
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Feasibility Study - Open Pit Designs, Saudi Arabia
Middindi contributed to the geotechnical aspects of more than ten open pit designs for two mining projects in Saudi Arabia. The work focused on supporting feasibility-level studies through geotechnical data acquisition, validation, and interpretation.
The scope included the siting and validation of geotechnical drilling programmes, quality assurance and control of drilling and sampling procedures, and the review and synthesis of historical geotechnical databases. The collected data was used to inform pit slope design, including the derivation of rock mass classifications based on lithostratigraphic domains, statistical analysis of laboratory strength testing, and orientation analysis for kinematic assessments.
A range of specialised geotechnical software was used in the analysis and design process, including DIPS, RS2, SLIDE, RSData, and @RISK.
Rock Engineering Site Services - Multiple Operations, South Africa
Middindi provides routine rock engineering site services to a number of mining operations across South Africa, covering commodities such as coal, iron ore, manganese, chrome, and dimension stone. These services support mines operating under various mining methods and geotechnical conditions.
The scope of work includes regular monthly and quarterly site visits, rock engineering inspections and audits of mining areas, identification of rock-related hazards, and training of mine personnel on observed risks. Additional services include on-site quality control inspections of installed support systems, assessment of high-risk areas, assistance with geotechnical risk assessments, and ad-hoc technical support such as the review and updating of relevant rock engineering documentation (e.g. Codes of Practice and Standard Operating Procedures). The work also includes fulfilling directives from regulatory authorities where required.
