Knight Piésold

Engineering, Infrastructure and Management Services for Mining Operations

knight piesold

Knight Piésold is synonymous with quality engineering, environmental science and construction support for mine infrastructure. The company has used its expertise on hundreds of surface and underground mining projects worldwide and in all stages of permitting, project development, construction, operation and closure.

Knight Piésold has become a leader in the field due to its ability to research, design and implement pioneering solutions to challenges such as mining waste management and heap leach systems, as well as its specialist geo-mechanical evaluations for open pit stability and underground mine developments. Knight Piésold offers a broad spectrum of services, including:

  • Mine development
  • Heap leach pad design
  • Geotechnical services
  • Water management
  • Construction engineering and infrastructure
  • Tailings storage and waste management
  • Environmental management
  • Operation and monitoring
  • Mine closure and reclamation

Mine infrastructure development

Knight Piésold has extensive experience in topographical and geotechnical survey for mining and civil engineering projects throughout the world, with specialised skills having been developed in site investigation in both soils and rock. Comprehensive laboratory and interpretive services are offered in-house and through its associate company, Civilab, in South Africa.

Together with its international branches and extensive track record in the planning, design and implementation of engineering and mining projects, Knight Piésold offers fully integrated technical and financial services to the mining industry, including risk analyses, feasibility studies and bankable documents, environmental management and due diligence audits.

The company also offers full project management services for a variety of mining projects from complete mine infrastructure design and planning to assistance with specialist disciplines. These services include permitting procedures, quarry planning, transportation studies, procurement services and site supervision.

Heap leach pad design

Knight Piésold has extensive experience in the design of leach pads for all locations and sizes. Substantial expertise has been accumulated in satisfying stringent groundwater protection requirements with extensive use of synthetic membranes and natural and modified soils as lining materials. The company has partnered with process design specialists to provide a full design service.

Knight Piésold recognises that successful construction represents the proper implementation of the design and is as important as the design itself. The company has developed well-established quality control procedures and has extensive experience in quality assurance and quality control to ensure that construction practices are appropriate.

Tailings storage and waste management

Knight Piésold's experience in tailings facility engineering and the disposal of particulate mine waste dates back to the 1930s, with knowledge of all types of tailings management systems. The company pioneered the development of alternative tailings management technologies such as drained sub-aerial systems, cyclone wall raising, thickened / ultra-thickened / paste tailings disposal, and dewatered 'dry stack' tailings systems.

Knight Piésold established strong working relationships with specialist groups in order to provide complete and comprehensive design and operational expertise for tailings management through the full lifecycle. The company also specialises in design review and third party audits.

Water management system for mining projects

Knight Piésold has designed water management systems for mining projects throughout the world. It offers a full range of water management services to the mining industry based on international experience in hydrology, hydraulics, hydrogeology and hydrochemistry.

These services include surface water resources planning, hydrogeological investigations, river diversion, mine dewatering, water balance studies, water quality assessment and treatment.

Construction engineering and infrastructure

The company offers a wide range of construction design and supervision services to the mining industry, including:

  • Tailings facilities
  • Heap leach pads
  • Slurry and water pipelines
  • Water storage
  • Access and haul roads
  • Materials handling and storage facilities
  • Process plant facilities

Environmental management and assessments

Knight Piésold's environmental team has significant experience in methods to alleviate degradation associated with the mining industry. It offers a full complement of environmental and social expertise, integrated with Knight Piésold's mining project development services to ensure expedient acquisition of all required permits.

Services include assessment of water, acid rock drainage / metal leaching (ARD/ML) potential, air, biological and social environments. Additionally, the company's environmental and social studies will ensure compliance with lending institution standards.

Operation monitoring of mines

Commissioning and operation services are provided through operation monitoring, operating manuals / codes of practice, emergency response plans, training, statutory inspections, audits, engineering evaluations and asset valuations.

Mine closure and reclamation

Knight Piésold's integrated expertise in site and waste characterisation, engineering design, risk assessment, cost estimating and construction management combines to develop appropriate closure plans for new and existing mining operations that are compatible with the surrounding environment.

The scope of services provided covers remediation of infrastructure, waste dumps, rehabilitation, acid drainage mitigation and contaminated land remediation.

Geotechnical services

Knight Piésold has considerable experience in all aspects of rock mechanics, including rock classification and support systems. In the field of slope stability, the company is widely experienced in the design of embankments and open pit mining operations, including stability under dynamic earthquake loadings.

Contact Details

Knight Piésold (Pty) Ltd
4 De La Rey Road
Sandton 2128
South Africa
+27 11 806 7111
+27 11 806 7100