The Geotechnical Life-cycle of a TSF - Planning and Execution
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Block D15/234, Post Office Road Extension GICEL – SCC
Accra – Ghana
Monday to Friday
9 AM – 5 PM. GMT
Dr. Jeffrey Coffin is a member of the general management team of the Knight Piésold Consulting for West Africa, North and South America. He is the immediate regional manager – West Africa of Knight Piésold Consulting. He has thirteen years of civil and geotechnical engineering consulting experience and four years with a major “Research One” university at the graduate level. His project experience includes geotechnical analysis and design for tailings facilities, heap leach facilities, and waste rock facilities. His specialization is the characterization and modelling of the consolidation of soft soils, such as mine tailings, which undergo considerable strain during the consolidation process.
He has been involved in the KP consulting for Chirano Gold Mine, Ghana which included the design of two brown-field expansions, and a raise to an existing tailings storage facility. Jeff was also involved in the construction oversight of a brown-field expansion and detailed design of future raises for the facility at the Golden Star Ghana Wassa Gold mine in Ghana. He has also been involved in many geotechnical investigations, auditing and feasibility in many mines across the world including La Colpa Gold Mine- Cile, Polymet Project-USA, Rosemont Copper Project- USA, and Sierra Rutile Mine, Sierra Leone among others. He has a PhD, Civil Engineering, and Geotechnical Program from the University of Colorado Boulder, Colorado-USA.
Koduah Dapaah is a Certified Engineer with M.Eng. (Mining, Waste Disposal Tech & Geotechnics) with more than 20 years of both local and international professional experience in mining, petroleum and manufacturing industries as well as industrial minerals and Health, Safety & Environment and Sustainable Development.: a PhD in Environment & Sustainable Development: He is atop HSE Professional with extensive leadership experience in major capital projects, health, safety and environment, risk management and key strategic. A strategic, integrative thinker and driver of results that has balanced corporate financial performance with operational, health, safety, sustainability and environmental integrity.
A professional with exceptional leadership experience in unique complexity of both Underground and Open Pit operations for both Contract & Self-perform mining in one exemplary setting. He is Ghana’s most celebrated HSE Professional – Five time consecutive EPA, Mine Inspectors’ and two time-time consecutive-run Chamber of Mines’ awards winner. Also, a certified Manager (for Independent Work, HSE & Mines Management).
He is a member of SME; and Institute of Risk Management. Chair of Ghana Chamber of Mines’ ENSOC; and Senior Member of Technical Committee. Serves as External Examiner for Universities of Higher Learning and Collaborator with Research Institutes including Helmo University College, Belgium.
Dr Charles Freeman Alolibila Akayuli has a PhD (1999) in Materials and Structures from the Kobe University, Kobe – Japan, and has over 35years experience as a research scientist, geotechnical and mining engineer. He has an MSc (1986) in Rock and Soil Mechanics from University of Zambia, Lusaka and a BSc (1986) in Mining Engineering from the University of Mines and Technology (now UMaT) in Tarkwa, Ghana. His experience includes mining and mine planning, geotechnical investigations, soil and materials research in both underground and open-pit mines, civil engineering and construction works. Dr. Akayuli has held various technical, leadership and lectureship roles throughout his entire professional career.
He is a research scientist and has been involved with the Geotechnical engineering division of the Building and Road Research Institute (BRRI) in Kumasi, Ghana for over about two decades. He has conducted a lot of research and consultancy on tailings dam and feasibility studies and other mining industry projects in Ghana and other West African Countries. Dr Akayuli spent four years at the University of Zambia from 1991 – 1995, where he lectured undergraduate level courses in mineral economics, rock and soil mechanics.
He joined Tarkwa Goldfields in 1980 where he worked for 8 years as an Assistant Mine Planning Engineer and later as a Shift Boss and Mine Geotechnical Engineer in an underground setting. Dr Charles Akayuli has conducted over 30 publications including Journal, conference papers, research reports and Technical paper publications to his name.
He has been a member of the governing council since 2014 and he is currently the Chair the Publications committee for WAIMM and also serves on the Education Committee.
He is a member of the Ghana Institution of Engineers, Ghana Geotechnical Society, International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE) and International Society of Rock Mechanics.
He is currently the Managing Director of Geosystems Consulting, a geo-environmental consultancy firm based in Kumasi, Ghana.
Engr. Billy B. Archer is a Certified Consulting Engineer and Construction /Project Management Professional with experience in both surface and underground mining environment. He has over 20 years’ experience in Construction and Capital project development/ delivery involving Tailings Storage Facilities (TSF) Construction, Building, Civil, Electrical, Metallurgical and Mechanical Engineering projects. He is currently the Head of the Projects and Construction Services Department of Golden Star Wassa Limited and the appointed Project Manager on the implementation of the Wassa Underground Paste Backfill Project.
He has HND in Building Technology from Kumasi Polytechnic, now Kumasi Technical University (KTU), a Bachelor’s Degree in Quantity Surveying and Construction Economics from Kwame Nkrumah University of Science and Technology (KNUST), Kumasi and pursuing a Master’s Degree in Engineering Management at the University of Mines and Technology (UMaT), Tarkwa, expected to graduate in 2020.
He is a Fellow of the Institution of Engineering and Technology, Ghana (IET-GH) as well as the West African Institute of Mining, Metallurgy and Petroleum (WAIMM). He also has affiliations with the Ghana Institution of Surveyors and the Chartered Institute of Building-UK.
