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Knight Piésold

Website verified September 2026

Key takeaways

  • Category: Environmental Services, Water & Tailings
  • Based in: Johannesburg South Africa, Harare Zimbabwe, London United Kingdom and 30 more locations
  • Serves: Africa, Argentina, Australia, Botswana, Brazil, Canada, Central Asia, Chile, Democratic Republic of the Congo, Europe, Ghana, Kenya, Mexico, Namibia, North Africa, North America, Peru, Russia, South Africa, South America, Southern Africa, United Kingdom, United States, Worldwide, Zambia, Zimbabwe
  • Operating: Founded 1921

Knight Piésold was founded on April 1, 1921 in Johannesburg, South Africa by Dr. Francis Edgar Kanthack. The company operates as an employee-owned, global consulting firm with a 1,400-person team working from 29 offices across 16 countries. Knight Piésold provides specialist engineering and environmental services to the mining, power, water resources, and infrastructure industries through all stages of project development, from evaluation and permitting to design, construction and closure.

The company’s integrated engineering and environmental teams comprise engineers, environmental scientists, geoscientists, and technologists. For mining projects specifically, Knight Piésold offers services including tailings and waste management, rock mechanics, mine water management, mine geochemistry, heap leach pad design, geotechnics, pipelines and pump stations, and environmental assessment and permitting. For power generation, the firm provides services across hydropower (storage, pumped storage, run-of-river), wind power (on-shore and off-shore), solar power, wave and tidal power, geothermal power, thermal power, transmission lines and substations, and interconnection studies. In water resources, services include baseline climate and hydrology data collection, water management planning for mine sites, hydraulic modeling, hydraulic structure design, floodplain mapping, computational fluid dynamic modeling, and wastewater treatment design. Infrastructure services cover transportation, stormwater management, water-retaining structures, silos, bunkers, staithes, residue storage facilities, and structural engineering across concrete, masonry, and steelwork.

Knight Piésold has grown organically from a small South African practice through organic expansion and establishment of regional offices. Early clients included South African Railways, Victoria Falls Power Company, Electricity Supply Commission (ESCOM, now Eskom), Anglo American Corporation, and Industrial Steel Corporation. The company’s technical capabilities include geotechnical software including DIPS, SEEP/W, SLOPE/W, FLAC, SWEDGE, CLARA, XSTABL, UDEC, PHASES2D, SHAKE, FLUSA, and PLAXIS for stability analyses. Services also include project identification and concept development, environmental and social baseline studies, environmental and social impact assessments, ESG standards alignment, site investigations (geotechnical and hydrogeological), project planning and scheduling, cost estimating, engineering scoping and feasibility studies, closure planning and costing, dam breach assessment, tailings liquefaction assessment, detailed engineering and specifications, tender documentation, contract administration, quality control and assurance, project management and data management, due diligence reviews, construction support and management, soils and materials testing, and geographic information system services.

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Company details

Projects and clients
Meadowbank Mine – Amaruq Site, Salton Sea Species Conservation Habitat Project, 1,230 MW Site C Clean Energy Project, Klamath River Renewal Project, Zambeef Mpongwe Flour Plant Expansion, Karowe Diamond Mine Fine Residue Deposit Project, Kikagati Hydropower Project, Azambi Hydropower Project, Box Canyon Hydroelectric Project, Capilano Break Head Tank and Energy Recovery Facility, Ingula Pumped Storage Scheme, Kokish River Hydroelectric Project, Mount Milligan Waste and Water Management Plan, East Toba and Montrose Hydroelectric Project, Upper Stave Hydroelectric Project, Ntimbale Dam, Berg Water Project, Berg River, McNair Creek Hydroelectric Project, Majuba Power Station, Odi Hill Reservoir Botswana, Katse Dam Lesotho Highlands Scheme, Lilly Pipeline Conversion Project, Penducone Suspended Water Tank, Gqebera Secondary School Missionvale Port Elizabeth, 1990 Survey of Surface Water Resources of South Africa, Northern Wastewater Treatment Works Unit 4, Ergo Tailings Dam Permanent Decant Towers, Shark Rock Pier Port Elizabeth, Foskor Selati Tailings Pumpstation, Sasol 2 Cooling Tower Performance, Lethabo Boiler House Structure, PPC Dwaalboom Cement Works, Kelvin Power Station Cooling Towers, Vaal-Zuikerbosch Canal, Matla Boiler House Structures, Gualcamayo Mine, Los Azules Project, Veladero Mine, Lindero Gold Mine, Cerro Negro Mine, Agnico Eagle Mexico Operations, Mantos Blancos Operations, Mina Justa Project, Gamsberg Zinc Mineral Processing and Infrastructure Project, Western Aqueduct Project, Emoyeni Reservoir, Neckartal Dam, Mary River Project, 400 MW Swan Lake North Pumped Storage Hydroelectric Project, Azambi Hydroelectric Project, Rehabilitation of Main Road between Atlantic Road Muizenberg and Clovelly Road, Von Bach Dam Asphaltic Seal Replacement Project, Ity CIL Project, Pierina Mine, Farim Phosphate Project, uMkhomazi Water Project Phase 1, Inmarsat and Knight Piésold Tailings Dam Monitoring Solution
Scale
1,400-person team, 29 offices, 16 countries, 100 years of operations, hundreds of tailings dam designs, hundreds of surface and underground mining projects, numerous award-winning projects
Also worth knowing
Founded 1921 by Dr. Francis Edgar Kanthack in Johannesburg South Africa, Dr. Kanthack previously served as Director of Irrigation for the Union of South Africa from 1911 to 1920, Employee-owned firm, Designated as Global Specialists in Sustainable Mining Development and Global Specialists in Renewable Energy Development, Pioneered and advanced development of alternative tailings management technologies including sub-aqueous systems, drained sub-aerial systems, thickened/ultra thickened/paste tailings disposal, and dewatered dry stack tailings systems, World-leading expertise in dam breach modelling and inundation mapping, Industry-leading tailings monitoring and management professionals, Received Editor's Award from Mining Magazine in 2019 for Inmarsat and Knight Piésold Tailings Dam Monitoring Solution, Named in Top 10 Visionary Business Leaders in Africa 2024, Multiple Diamond Arrow Awards from PMR.africa for Outstanding Mining Consulting Engineers, Outstanding Water Resources Consulting Engineers, and Outstanding Environmental Consulting Engineers, Received Great Place To Work Certification, BC's Top Employers multiple years, Canada's Top 100 Employers multiple years, Canada's Best Employers for Recent Graduates multiple years, Lifetime Achievement Awards from multiple organizations, Award of Excellence from Association of Consulting Engineering Companies British Columbia for 1,230 MW Site C Clean Energy Project in 2026, Commendation from Consulting Engineers South Africa for Karowe Diamond Mine Fine Residue Deposit Project in 2025, Honor Award from ACEC Colorado for Environmental category for Salton Sea Species Conservation Habitat Project in 2026, Distinguished Leader Award from Association of Consulting Engineers of Zambia in 2026

Details prepared by MineListings. Knight Piésold can update them by upgrading to Premium.

Where is Knight Piésold listed in the directory?

Environmental Services 474 companies Water & Tailings 113 companies

Frequently asked questions

What does Knight Piésold supply?

Tailings and mine waste management, site selection and permitting support, technical specifications, site investigations, construction monitoring, in-situ testing, contract administration, tailings dam engineering, cycloned and spigotted sand embankment design, QC laboratory services, seismic risk assessment, quality assurance, hydrogeological assessment and groundwater flow, water balance modeling, grouting and seepage control, soil and rock slope stability analysis, dam monitoring and instrumentation, supernatant water decant systems, environmental audits, geotechnical numerical modeling, reclamation and monitoring, annual inspections, dam breach studies, tailings liquefaction assessment, dam design, inspections and dam safety, geotechnical site investigations, hydrology and hydraulic design, dam site alternative studies, seismic risk assessment and stability, construction QA/QC and support, instrumentation monitoring, construction permitting assistance, as-built documentation, dam rehabilitation, tailings dam monitoring and management, site investigation and characterization of tailings facilities, specification and installation of geotechnical and hydrogeological instrumentation, remote sensing and monitoring including InSAR and satellite imaging, photogrammetric monitoring, state-of-the-art automated remote monitoring and data management systems, development of tailings management and risk reduction programs, specification of performance objectives and development of Trigger Action Response Plans (TARPs), regulated dam safety services including dam safety inspections and review and Engineer-of-Record oversight, dam breach modelling and inundation mapping, waste characterization, tailings and waste rock testing, field and laboratory testing, numerical modeling, ML/ARD management, rock mechanics services for open pit and underground mining, pit slope design, stability assessment and operational monitoring, stabilization and support system evaluation, micro-seismic monitoring, program design and coordination, geophysical site characterization, oriented and triple-tubed diamond drilling coordination and supervision, in-situ testing including televiewer coordination, detailed geomechanical logging and site training, surface and underground geomechanical mapping, rock mass characterization and geomechanical domain determination, lab testing coordination for rock strength determination, hydrology instrumentation, ongoing engineering support for existing operations, slope stability and due diligence reviews, slope stability analyses and modelling, slope design optimization and remediation, dewatering and slope de-pressurization programs design, wall blasting optimization, geomechanical and hydrogeological instrumentation, slope deformation monitoring, inflow estimates, underground excavation planning support, mining method selection and stope sizing, excavation layout and support selection, pillar design, crown pillar stability and risk assessment, rockburst assessment and rockburst risk management strategies, seismic data analysis instrumentation review and design, 2D and 3D numerical stress modelling, far-field stress assessment, underground rock mechanics review and audits, ground control reviews, mine water management, water management system design, site-specific water management planning, hydrometeorology assessment, surface water hydrology, groundwater assessment, waste characterization, heap leach pad water management, tailings water management, waste rock water management, probabilistic modelling, flow estimates, climate change impact assessment, mine hydrogeology, groundwater studies, groundwater quality and quantity management, mine geochemistry including baseline and site characterization, mine waste characterization, ML/ARD (metal leaching and acid rock drainage) management plans, mine water management, geochemical modeling, contaminant fate and transport, geochemical characterization of site materials, waste rock, ore, tailings, cover and construction materials, geochemical testing of materials, specialized modeling analyses, water quality prediction, mine drainage water quality management, post-closure liability reduction, heap leach pad design, gravity percolation design, lined pad design, drainage measure design, solution collection system design, quality control and quality assurance procedures, construction quality assurance and control, mine geotechnical services, site investigations tailored to site complexity, geotechnical field and office services, all-encompassing engineered approach, pipelines and pump stations for mining including slurry handling, cost-effective and environmentally sound design, pump and pipeline selection, mine slurry pipeline design, tailings pipeline design, concentrate pipeline design, cycloned sands pipeline design, tailings stream characterization, rheology testing, pipeline head losses estimation, allowable velocity range determination, materials selection, energy dissipation design, tailings discharge management, deposition strategy, surface water recovery management, material and equipment selection, technical specifications for pipework and valve supply installation and testing, pump station specification and design, spill containment, electrical supply, contingency management, system monitoring and operator training, hydropower services including storage hydropower, pumped storage hydropower, run-of-river hydropower, wind power services including on-shore wind farms, off-shore wind farms, wind-hydro combinations, wind-diesel combinations, solar power services, wave and tidal power services, geothermal power services, thermal power services, transmission lines and substations, interconnection studies, energy efficiency and energy audits, strategic energy planning, resource appraisal, concept development, system planning, feasibility studies, engineering and detailed design, construction and project management, environmental impact assessment, financial analysis, EPC (Engineering, Procurement and Construction) project delivery, design-build contractual arrangements, project management, construction monitoring and coordination, water resource services including baseline climate hydrology and hydrogeology data collection, climatic hydrologic and hydrogeologic data assessment analysis and quantification, climate change assessment, long-term flow estimation for hydropower and water supply evaluations, water management planning for mine sites, hydraulic modeling including dam break and hydraulic transients, hydraulic structure design including dams ditches pipelines intakes and spillways, floodplain mapping and 1D and 2D flow modeling, computational fluid dynamic (CFD) modeling, water demand forecasting, water resource development planning, water infrastructure planning, bulk and reticulation water and sewer conveyance design, wastewater treatment design, baseline studies, permitting, environmental and social impact assessment, social studies and community engagement, environmental management plans and monitoring, environmental and social baseline studies, environmental management plans, environmental and social impact assessments, ESG standards integration, infrastructure services including transportation infrastructure, stormwater management and infrastructure, water-retaining structures, silos bunkers and staithes, residue storage facilities, reinforced and pre-stressed concrete, earth-retaining structures, reinforced and plain masonry, structural steelwork, wind-sensitive structures, initial feasibility and cost studies, detailed design and specification, construction monitoring, planning and feasibility studies, site and structural stability investigations, foundation and pile design, cost engineering, forensic audits, seismic design, contract administration, project identification and concept development, environmental and social baseline studies, environmental and social impact assessments, ESG standards, site investigations (geotechnical and hydrogeological), project planning scheduling and cost estimating, engineering scoping pre-feasibility and feasibility studies, closure planning and costing, dam breach assessment, tailings liquefaction assessment, detailed engineering design and specification, tender documentation and evaluation, contract administration and monitoring, quality control quality assurance and inspections, project management and data management, due diligence review, project and data management, engineering support, geosciences support, contract tendering and technical specifications, construction support and management, soils and materials testing, geographic information system (GIS) services, remote sensing, mine closure and reclamation planning

Where is Knight Piésold based?

Johannesburg South Africa, Harare Zimbabwe, London United Kingdom, Sydney Australia, Vancouver Canada, North Bay Canada, Denver Colorado USA, Elko Nevada USA, Tucson Arizona USA, Fort Collins Colorado USA, Santiago Chile, Lima Peru, Mendoza Argentina, San Juan Argentina, Perito Moreno Argentina, Gaborone Botswana, Accra Ghana, Cape Town South Africa, Durban South Africa, Phalaborwa South Africa, Pretoria South Africa, Sandton South Africa, Windhoek Namibia, Mbabane Eswatini, Kitwe Zambia, Lusaka Zambia, Kolwezi Democratic Republic of the Congo, Lubumbashi Democratic Republic of the Congo, Brisbane Australia, Melbourne Australia, Perth Australia, Belo Horizonte Brazil, Mexico City Mexico

Which industries does Knight Piésold work in?

Mining, power, water resources, infrastructure

What equipment or products does Knight Piésold offer?

DIPS, SEEP/W, SLOPE/W, FLAC, SWEDGE, CLARA, XSTABL, UDEC, PHASES2D, SHAKE, FLUSA, PLAXIS, InSAR, satellite imaging, photogrammetric monitoring, Work

How long has Knight Piésold been operating?

Founded 1921

How do I contact Knight Piésold?

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