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Blake, Cassels & Graydon LLP

Energy, Projects, Environmental & Aboriginal Law

19 ranked lawyersBand 1CanadaGlobal 2022 View ranking table
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chambers review
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Ranked Lawyers

Chambers Review

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What the team is known for

Blake, Cassels & Graydon has a highly regarded energy team with substantial regulatory and transactional strength, and is heavily involved in significant infrastructure project development across Canada. The firm is regularly called on by some of the major players in the conventional and renewable energy sectors to provide commercial and project finance advice. In addition to handling upstream M&A and infrastructure work in the oil and gas patch, the practice has a strong midstream component. The firm offers a full-service Aboriginal law practice with a particularly strong presence in Western Canada as well as frequently advising on matters in Ontario and Québec. Its lawyers advise on a broad range of environmental matters including project development, compliance, chemical and waste regulation and endangered species law.

Notable practitioners

Alain Massicotte leads the firm's Montréal infrastructure group, frequently acting for public authorities, sponsors and lenders on a range of project developments.
"He is a strong lead commercial lawyer with an eye on the big picture and is pragmatic and solution-focused."

Catherine Doyle is renowned in the Canadian PPP and infrastructure space for her representation across project finance and development over a suite of sectors. Based in Toronto, she handles major projects on behalf of proponents, investors and consortiums.
"Catherine is confident, responsive and can hold her own with any counsel in Canada in a finance negotiation." "She really has the ability to deal with all aspects of a project."

Montréal-based Charles Kazaz enjoys an excellent reputation for his work representing mining companies in the full gamut of environmental issues, including permitting, enforcement and prosecutions. 
"I have found Charles Kazaz to be knowledgeable in the legal matters under discussion, familiar with the practical application of legal requirements, and responsive to our requests and questions." "He always has the right strategy for the issue."

Calgary-based Duff Harper has expertise in site redevelopments and the transportation of hazardous goods. He is also experienced in assisting with environmental litigation, as well as advising on the environmental considerations of commercial agreements.
"Duff Harper's strengths are his ability to combine an in-depth knowledge of environmental law with a very practical approach to dealing with problems and people." "He always takes the time to ensure that he understands what we really need."

Pre-eminent environmental lawyer Jonathan Kahn advises on a broad spectrum of matters in the environmental space, including prosecutions and class actions relating to issues such as land contamination. He is based in Toronto.
"Over the years Jonathan Kahn has not only pointed out various statutory, policy and case law principles that we should be mindful of, but also consistently offered creative solutions to mitigate these risks." "He can relate to people and is very strategically minded on how to address specific concerns."

Judy Wilson operates out of the firm's Toronto office and frequently assists a range of provincial and municipal authorities with the procurement aspects of public infrastructure projects.
"Judy is capable of understanding complex legal issues, understanding the drivers behind her client's decision-making process, and provides both expert legal advice and practical solutions." "She is a deal maker; tough but fair, and commands respect."

Calgary-based oil and gas lawyer Keith Byblow advises on domestic and international mandates, including acquisitions, strategic partnerships and joint ventures.
"Keith Byblow is a standout due to his highly developed commercial awareness."

Lana Finney handles a wide range of environmental matters, including contaminated land claims. She recently joined the firm's Toronto office from DLA Piper.
"Lana Finney demonstrates a full set of legal capabilities combined with a reasonable, pragmatic approach and the highest professionalism." "Her dealing with counterparties is extremely respectful but she always represents our best interests."

Lars Olthafer represents clients before energy regulators, demonstrating particular strength in land law matters arising from pipeline and project development. Utilising his background in engineering, the Calgary-based lawyer ably advises on a wide range of regulatory mandates arising from the oil and gas sector, including environmental compliance and First Nations consultation.
"He has a unique engineering background and speaks the language."

Marianne Smith assists a range of provincial and municipal authorities with the procurement aspects of public infrastructure projects. Operating out of the firm's Toronto office, she is experienced across a range of sectors including civil infrastructure, transportation and healthcare.

Toronto-based Mark Johnson is sought out for his handling of major developments in social and commercial infrastructure, where he represents the interests of proponent consortiums, investors and Crown corporations.
"Mark is calm, well prepared and understands the legal framework in which we operate." "He is very technical, bright and organised."

Mungo Hardwicke-Brown is noted for the depth of his industry knowledge in the energy sector, acting on major pipeline transactions and project financing mandates. Based in Calgary, he possesses a long-standing reputation for his work on transportation and infrastructure matters.

Managing partner of the firm's Calgary office Ben Rogers is widely admired for his experience acting on oil and gas transactions. He acts on behalf of both offshore and domestic clients in joint ventures, mergers and dispositions.
"Ben Rogers is a very good and strong oil and gas practitioner." "He has really been a confidant in matters and is fantastic."

Roy Millen is a well-regarded Aboriginal law practitioner who frequently advises significant natural resource and energy clients. Based in Vancouver, he provides experience in the negotiation and execution of agreements with Aboriginal groups.
"Roy Millen is able to provide substantive input on strategy for engagement with First Nations." "He is able to guide and gel the collective will of negotiating teams, and efficiently translate these collective goals into succinct contractual language."

Vancouver-based Sam Adkins acts on environmental assessments and has experience advising on the Aboriginal law aspects of major projects, including those in the energy and natural resources sector.
"Sam Adkins has extensive knowledge of the work that he does in this field and is able to give additional insight specific to the local First Nation groups." "He has a wealth of experience in the Aboriginal field."

Montréal partner Sébastien Vilder frequently acts as lenders' counsel in relation to power projects, exemplifying particular expertise covering wind farm developments.
"He is an excellent project finance attorney who is very results-driven and has exceptional problem-solving skills in handling the most complex issues." "He understands the business requirements and, while he protects the interest of his clients very well, he most often finds acceptable positions in negotiations."

Terri-Lee Oleniuk advises oil and gas sector clients on regulatory compliance, as well as on environmental and Aboriginal law, from her base in Calgary.
"Terri-Lee Oleniuk is very knowledgeable in Indigenous and regulatory law as it pertains to the oil and gas and power sectors throughout Canada." "She was responsive and provided what I believe was practical advice for us to consider."

Tony Crossman advises on a wide range of environmental regulatory issues, representing clients in the energy and mining sectors out of the firm's Vancouver office. He has further experience assisting with the environmental considerations of commercial and corporate transactions.
"Tony Crossman provides concise, understandable, focused advice on complicated matters." "He is very conscientious and considerate of the client’s needs and limitations."

Department Information

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Energy, Projects, Environmental & Aboriginal Law

Blake, Cassels & Graydon LLP


199 Bay Street

Suite 4000

Commerce Court West




M5L 1A9

View Firm Profile

Ranked Lawyers

Chambers Research is conducted by 200 Research Analysts, across 200 jurisdictions and provides nearly 6,000 rankings tables. Annually we collect hundreds of thousands of responses from clients, the majority via in-depth interview. Learn more about our methodology.


Aboriginal Law

Energy: Oil & Gas (Regulatory)

Lars H Olthafer
Band 3
Terri-Lee Oleniuk
Band 3

Energy: Oil & Gas (Transactional)

Keith Byblow
Band 3
Mungo Hardwicke-Brown
Senior Statespeople

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