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Mining

Mine operators need partners they can rely on, whether for roads, rail, aerodromes, housing, water, environmental services or any other engineering and mining related services. We have extensive experience throughout Africa on surface infrastructure, including haul roads, service roads, heavy pavements and airport facilities. Included in our specialist services are risk management and safety assessments, advice on legislative compliance and project management.

  • Surface infrastructure
  • Tailings and mine waste
  • Geotechnical engineering
  • Legislative compliance
  • Contamination and rehabilitation
  • Water resource management

For many years we have provided comprehensive professional expertise throughout the full cycle of small to large mining infrastructure projects.  We focus on the delivery of innovative, cost-effective solutions that are appropriate and sustainable.  Our clients range from small mining operators to international firms mining coal, iron ore, manganese, and platinum.

JG Afrika

Technical Support Services: Mineral Processing Engineering

  • Process plant optimisation
  • Plant feasibility studies
  • Process plant audits
  • Plant operator training
  • Assisted plant operation
  • Solid-liquid separation
  • Gravity separation
  • Bench scale and pilot test work
  • Plant de-bottlenecking
  • Process control

Our team has undertaken the basic and detailed design of various ash dam facilities (ADF’s), as well as pollution control dam (PCD) complexes and a combination of pollution and clean water dam complexes for several power stations. The new / extended ash dam facilities and associated infrastructure are needed to store the ash (either wet or dry) from the coal combustion process, for the life of the power station.

Kendal Power Station new continuous ash disposal facility | JG Afrika
JG Afrika
JG Afrika

Project Cycle Engineering

  • Feasibility studies to detailed design
  • Alternative options for tailings dewatering, transportation and disposal
  • Site Selection and permitting
  • Compilation of bill of quantities and cost estimates
  • Compilation of construction tender and contract documents
  • Construction supervision
  • Project management.

Geotechnical Engineering

  • Geotechnical field investigations
  • Geotechnical characterisation of industrial and mine waste and foundation materials
  • Geotechnical modelling (seepage, slope stability and settlement assessments).

Existing Operations

  • Ongoing monitoring, inspections and technical review of industrial and mine residue facilities
  • Compilation and updating of operating, maintenance and surveillance manuals
  • Risk and hazard assessment
  • Legal compliance assessment
  • Management systems audits
  • Compilation and review of emergency preparedness plans
  • Design of remedial works
  • Permitting and regulatory compliance.

Water Management

  • Prediction, prevention and control of contamination of water from tailings dams, spoil piles and other mining and metals processing sources
  • Design of surface water management systems and pollution control works
  • Probabilistic modelling in the fields of surface water (floods, dam sizing, water use licences)
  • Water use efficiency
  • Flood hydrology.

Sustainable Mine Closure

  • Quantification of financial provisions for rehabilitation, closure and aftercare of mining operations
  • Sustainable mine closure design.

Commodities

  • Precious metals
  • Base metals
  • Industrial metals
  • Power generational ash
  • Coal.

Our geotechnical professionals are able to offer services to the mining industry in terms of geological mapping, rock and cut face stability assessments, quarry layout design, and the classification of waste materials. Our designers are experienced in the site investigation, construction material sourcing and feasibility through to detailed design of ash dam facilities and pollution control dams (PCD’s), using both natural materials and geosynthetic liners.  Our clients include small scale miners, and quarry operators to large international mining houses.

mining

Geotechnical Engineering

  • Geotechnical field investigations
  • Geotechnical characterisation of industrial and mine waste and foundation materials
  • Geotechnical modelling (seepage, slope stability and settlement assessments).
  • Exploration and stability assessment
  • Tailings dam design
  • Rock face stability

Municipal engineering services and infrastructure are the backbone of any economy.  For many years we have provided comprehensive professional expertise throughout the full cycle of small to large infrastructure projects.  We focus on the delivery of innovative, cost-effective solutions that are appropriate and sustainable.  Our clients include large metropolitan authorities, district municipalities, utility companies, private investors and small community organisations.

JG Afrika

Legislative Compliance

  • Mining right and mining permit applications
  • Applications for environmental authorisations (EIA, EMPR, BAR)
  • Water Use Licence Applications (WULA)
  • Environmental Performance Assessments (PAM Audits)
  • Stormwater GN 704 compliance assessments
  • Authority approvals for provincial and municipal roads
  • Airport licensing and compliance assessment
  • Risk management and safety assessments
  • Calculation of financial provisions/quantum for rehabilitation.

By adopting a tiered, risk‐based approach, we can establish if contamination has occurred and whether the contamination presents a significant risk of harm. The assessment of contaminated land is required to protect human health and the environment. Contaminated land assessments comprise a Phase 1 desktop, site walkover and limited site investigation, followed by a Phase 2 detailed invasive investigation for site characterisation. These inform the Phase 3 report which provides an evaluation of remediation.

JG Afrika
JG Afrika

Applications

  • Due diligence studies
  • Land contamination assessments
  • Surface water and groundwater contamination assessments
  • Underground storage take decommissioning
  • Borehole protection zones
  • Remedial design and implementation
  • Groundwater modelling
  • Sanitation protocols
  • Acid mine drainage
  • Human health and ecological risk.

Activities

  • Soil and/or water sampling and chemical analysis
  • Conceptual and site specific modelling
  • Saltwater intrusion
  • Plume delineation
  • Inorganic and organic analysis through accredited laboratories (local and international)
  • Design, installation and monitoring of groundwater monitoring boreholes/networks
  • Screening assessments
  • Site specific risk assessments.

We have extensive experience in integrated water resource management and the application of resource direct measures and source direct controls to ensure the protection of water resources and the use thereof for social and economic development.

JG Afrika
JG Afrika

River Eco-Status Monitoring Plan (REMP) and Management

  • A component of the National Aquatic Ecosystem Health Monitoring Programme (NAEHMP)

    • Riparian vegetation delineations and assessments
    • Instream and riparian habitat assessments
    • Water quality assessment
    • Diatom assessment
    • Sediment (perennial and seasonal systems) and soil assessments (ephemeral systems)
    • Macro-invertebrate assessment (SASS5 accredited)
    • Fish assessment (including Red Data Fish surveys)
    • Monitor contaminant levels in fresh water fish
    • Toxicity Bioassays – acute screening and definitive tests on algae, bacteria, daphnia and guppies
    • State of the rivers reporting
    • Aquatic input into EMPs and BMAPs
    • Design of aquatic biomonitoring programmes.

Specialist Studies Within The EIA and BA Process

  • Aquatic biomonitoring
  • Wetland delineations and assessments
  • Aquatic biodiversity assessments and management plans
  • Aquatic impact assessment
  • Restoration and rehabilitation plans for rivers and wetlands
  • Demarcation Permit Applications for Category 2 Invasive Alien Plants (IAPs) in accordance with NEM: BA (Act 10 of 2004) and CARA (Act 43 of 1983).

Implementation OF NWA (Act 36 of 1998)

  • Identification of water uses requiring DWA authorization
  • Submission of Water Use License Applications (WULA)
  • Monitoring compliance with Water Use License (WUL) and Resource Water Quality Objectives (RWQO) and Target Water Quality Range (TWQR)
  • Design and implementation of mitigation measures