Who we are

Andrieux & Associates Geomechanics Consulting, L.P. (A2GC) is a Montreal-based consulting firm established in 2015, which offers technical services in the fields of geomechanics, ground control, numerical modelling and drilling and blasting to local and international mining, construction and civil engineering clients.

Technical work is directed and supervised by Patrick Andrieux, a mining engineer with over thirty-five years of experience at operating mine sites (both on surface and underground), as well as in research and development, instrumentation, technical services and support, and consulting.

Our goal and approach

Our purpose at A2GC is to provide our clients with the highest quality technical services in a timely and cost-effective manner, for the ultimate goal of efficiently solving complex geomechanical and blasting challenges.

A2GC can address a wide range of projects, from small to large. When required, it can rely on a network of hand-picked external associates, all world-class leaders in their line of work, and notably in the fields of structural characterisation, instrumentation, hydrogeology and civil engineering. This approach allows A2GC to offer a wide array of world-class technical services while maintaining a light structure, which, in turn, allows for lower hourly rates and, consequently, smaller overall project costs.

When projects do involve external participants, A2GC strives to streamline communications for the client, by sub-contracting, administrating, coordinating, supervising and reporting all aspects of the work.

What makes us unique

A2GC personnel combine over 15 years of working at operating mine sites with over 55 years of providing technical and consulting services to a wide range of clients. Having worked “on both sides of the fence” provides A2GC with a unparalleled perspective on its clients’ needs and expectations.

A2GC combines this experience with a thorough understanding of the mining business, whereby uncertainties, risks, costs, cycle times and delays are to be minimised, while productivity, production, and, ultimately, profits are to be maximised. A2GC recognises that, even though safety risks to personnel are never acceptable under any circumstance, some level of business risk may be allowable, based upon the tolerance of the client.

A2GC personnel have extensive experience running and managing geomechanical, ground control and drilling and blasting technical projects, which allows for a tight fit to be maintained between the analyses undertaken and the objectives of the work, to efficiently zero-in on practical, doable and viable long-term solutions.

Statement of qualifications

A2GC offers a wide range of services to its mining, construction and civil clients, other consulting firms, government agencies and contractors.

Selected clients list

  • Agnico Eagle – Discovery, Gilt Edge, Goldex, Kittilä, LaRonde, Meliadine
  • ArcelorMittal – Mont-Wright
  • Arianne Phosphate – Lac à Paul
  • Austin Powder Corp. Ltd.
  • Canadian Malartic – Canadian Malartic, East Malartic, Odyssey
  • Canadian Royalties – Allammaq
  • Capstone – Cozamin
  • Codelco – El Teniente
  • Coeur Mining – Silvertip
  • Continental Gold – Buriticá
  • Dalradian – Curraghinalt
  • DST – Pickle Crow
  • EBC – Romaine-4
  • Falco – Horne 5
  • Freeport-McMoRan – Grasberg
  • Glencore – Fraser, Matagami/McLeod, Morgan, Nickel Rim South, Raglan
  • Greenstone Gold Mines – Hardrock
  • Iamgold – Essakane, Westwood
  • Kirkland Lake Gold – Detour Lake, Holloway, Holt, Macassa, Taylor
  • Magris Resources – Niobec
  • Newmont Goldcorp – Century, Eleonore, Hollinger, Hoyle Pond, Musselwhite, Pamour
  • Nippon Dragon Resources – Rocmec I
  • Osisko – Bonanza Ledge, Cariboo, Windfall
  • Rio Tinto – Diavik, Kennecott
  • Stornoway – Renard
  • Trevali – Caribou
  • VALE
  • Wesdome – Kiena

Our team

Patrick Andrieux, Ph.D., P.Eng., Eng., Principal Engineer

Patrick is a Professional Engineer registered in Canada in the provinces of Quebec and Ontario, as well as a Designated Consulting Engineer in the Province of Ontario. His experience spans nearly 700 projects at more than 190 mine sites world-wide, providing technical and consulting services to over 130 mining companies, consulting firms, government organisations and contractors.

Thierry Lavoie, M.A.Sc., Eng., Principal Engineer

Thierry is a Professional Engineer registered in Canada in the Province of Quebec with over ten years of experience in consulting, research and development, technical services and support, and teaching. His project experience spans over more than 100 consulting projects at more than 30 mine sites. His areas of specialization are advanced numerical modelling and geomechanical mine design.

Amélie Ouellet, M.A.Sc., Eng., Project Engineer

Amélie is a Professional Engineer registered in Canada in the Province of Quebec. Her professional experience includes over 20 consulting projets at more than 15 mine sites in the fields of rock mechanics, slope stability, advanced numerical modelling and geological engineering models. She also participated in large-scale research projects in France and Malaysia on satellite radar imaging and geological CO2 gas storage.

Nicolas St-Onge, Eng., Senior Engineer

Nicolas is a Registered Professional Engineer in Canada, in the Province of Quebec and the Northwest Territories and Nunavut. He is a geological engineer with over ten years of consulting experience in rock mechanics for underground and open pit mining. He also spent a year as ground control team coordinator at an operating underground mine. His experience spans over 130 consulting projects at more than 50 mine sites. His areas of expertise are geomechanical mine design, ground control and support, geotech-nical rock mass characterisation, inspections and audits, and the training of personnel in geomechanics and ground control.