
Benefiting from one of the deepest benches in Canada, Blake, Cassels & Graydon LLP’s sizeable environmental law practice draws on specialists across the country. Considered by many a market leader, Toronto-based Jonathan Kahn advises on the full range of environmental compliance, litigation, incident response and corporate support; he recently advised Cleveland-Cliffs on the environmental law aspects of its C$3.4bn acquisition of Stelco Holdings. Also recommended in Toronto are national department head Charles Kazaz (who also operates from Montreal) and Lana Finney, who brings extensive experience in land contamination issues, regulatory compliance and environmental litigation. Key names in Calgary include regulatory and environmental litigator Dufferin Harper and Terri-Lee Oleniuk, who specializes in energy-related environmental work. In Vancouver, Tony Crossman is recognized for his expertise in mining-related matters. A strong second line of associates includes rising star Ryan McNamara (Toronto), who focuses on environmental law and electricity regulation.
Legal 500 Editorial commentary
Key clients
- Aira Wind Power
- Cleveland-Cliffs
- PR Development GP
- Three Hills Solar Power Corp
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Charles Kazaz
Other key lawyers
Jonathan Kahn; Lana Finney; Dufferin Harper; Terri-Lee Oleniuk; Tony Crossman; Ryan McNamara; Paulina Adamson





