Executive Summary: Key Legal and Evidentiary Issues

• At the heart of this case is whether Oxbow Sulphur Inc. owed fiduciary duties to Minera y Metalurgica del Boleo S.A.P.I. de C.V. as its sole sulphur agent, or whether the relationship was purely contractual in nature.
   
• Oxbow secretly earned trading gains and netback commissions on sulphur supplied to MMB totalling approximately $10,995,695, without disclosing these profits to the plaintiff.
   
• Address commissions of $105,798.31 received by Oxbow on vessel charters arranged for MMB's shipments were also not disclosed to MMB.
   
• Central to the court's analysis was the proper interpretation of the Supply Agreement, including its "Best Value" obligation, the $2.00 per tonne service fee cap on Oxbow's remuneration, and the limitation of liability clause under s. 14.1.
   
• Oxbow's key representative, Peter Goemans, was found to have intentionally misled MMB by describing netback arrangements only in general terms, failing to disclose that Oxbow earned fees and incentive payments from netback producers, and misrepresenting that index pricing approximated Oxbow's actual costs.
   
• The court rejected Oxbow's limitation and limitation-of-liability defences, finding that the continuing nature of the breaches reset the limitation period with each sulphur delivery, and that the limitation clause did not bar disgorgement or punitive damages for breach of fiduciary duty.

Facts of the case

The plaintiff, Minera y Metalurgica del Boleo S.A.P.I. de C.V. ("MMB"), owns and operates the Boleo mine in Baja California Sur, Mexico, a facility producing copper, cobalt, and zinc that requires a continuous supply of sulphur for its processing operations. The defendant, Oxbow Sulphur Inc. ("Oxbow"), was a Delaware-incorporated, Texas-based company formerly known as International Commodities Export Corporation ("ICEC"), engaged in sulphur marketing and logistics.

By a contract dated January 28, 2008, MMB appointed Oxbow (then ICEC) as its "sole agent and supplier" for 100% of the mine's sulphur requirements. That agreement was amended twice — first in 2012 to reflect Oxbow's name change, and more substantively by Amendment No. 2 dated October 9, 2013. The post-amendment agreement is referred to as the Supply Agreement. Sulphur shipments began in February 2014. From February 2014 to November 2023, there were 78 sulphur shipments arranged by or through Oxbow, with a total volume of approximately 2,200,000 tonnes. All currency figures in the decision are in U.S. dollars unless otherwise noted.

MMB alleged that Oxbow secretly collected commissions from sulphur suppliers and secretly earned profits by selling sulphur to MMB as principal, constituting breaches of fiduciary duties, contractual duties, and the duty of good faith. Oxbow denied that a true agent-principal or fiduciary relationship existed, arguing the relationship was merely contractual, and submitted that MMB suffered no loss since it continued to purchase sulphur from Oxbow even after raising its allegations.

Policy terms and contractual clauses at issue

The 2008 Agreement required ICEC to act as MMB's sole agent and supplier, providing sulphur at "Best Value" — defined as the lowest cost on a market-competitive basis without compromising security of supply — and to perform all services on "a completely open book and financially transparent basis" (s. 1.2.16). The service fee was set at USD $2.00 per tonne and was subject to annual CPI adjustment (s. 7.1). Section 7.2 provided that Oxbow's overheads and profit for the supply of sulphur were included in and limited to the service fee. Amendment No. 2 restructured delivery terms to provide for periodic shipments of approximately 25,000 metric tonnes on a monthly basis, with each shipment governed by an addendum negotiated in good faith between the parties. The Supply Agreement also contained a limitation of liability clause at s. 14.1, which excluded liability for indirect, special, incidental, punitive, exemplary, or consequential damages, or loss of profits arising directly or indirectly from any contract breach.

Oxbow sourced sulphur through two methods: spot trading, whereby it purchased sulphur at a negotiated price and re-sold it to MMB at a higher or lower price (with the difference constituting "trading gains" or losses); and netback arrangements, whereby Oxbow acted on behalf of sulphur producers and received a "marketing fee" typically around $1.50 per tonne, plus potential incentive fees, from the producers. Oxbow also received "address commissions" — a type of discount from shipowners — on the first nine shipments it arranged for MMB, totalling $105,798.31. The agreed amounts at issue included trading gains and netback commissions of $10,995,695 (comprising trading gains of $9,227,510 and netback commissions of $1,768,186), and service fees totalling $5,061,741.

Court's reasoning and analysis

Justice Blok found that the relationship between MMB and Oxbow was fiduciary in nature. The court accepted that Oxbow, under both the original and amended agreements, was expressly appointed as MMB's sole agent with authority to enter into contracts on MMB's behalf. Oxbow held power and discretion capable of unilaterally affecting MMB's legal and practical interests: it had the exclusive mandate to source, secure and deliver all of MMB's sulphur, and MMB was dependent on Oxbow's performance of its obligations. The court distinguished the arrangement from a purely commercial, arm's-length relationship between two sophisticated parties, finding that the contractual provisions imposing agency-like duties were sufficient to ground fiduciary obligations both prior to and following Amendment No. 2.

The court found that Oxbow breached its fiduciary duties in multiple respects. Peter Goemans, Oxbow's sales manager, intentionally failed to disclose that Oxbow received fees and incentive bonus payments under its netback arrangements with producers — arrangements that obliged Oxbow to obtain the best available price for the producers, in direct conflict with its obligation to obtain sulphur for MMB at Best Value. Mr. Goemans also deliberately misled MMB by suggesting that Oxbow's business was conducted predominantly on a netback basis, concealing that a substantial portion was conducted through spot trading that generated significant trading gains on sales to MMB. He further actively misled MMB by advising that the index pricing formula approximated Oxbow's actual costs, subject only to small timing-related gains or losses. The court also found that Oxbow's taking of undisclosed profits and commissions constituted a breach of the Supply Agreement, as s. 7.2 limited Oxbow's remuneration to the $2.00 per tonne service fee. These various breaches also constituted violations of Oxbow's duty of good faith and honest contractual performance.

On Oxbow's defences, the court rejected the limitation argument, finding that MMB was unaware of the secret profits and that the limitation period reset with each sulphur delivery given the continuing nature of the breaches. The limitation of liability clause at s. 14.1 was held not to limit disgorgement (which the court characterized as an accounting remedy rather than a damages order), direct contractual damages, or punitive damages for breach of fiduciary duty. The court also declined to deny equitable relief on the basis of MMB's conduct, finding MMB had not known that Oxbow was earning secret profits.

Ruling and overall outcome

MMB was granted judgment in its favour. The court ordered disgorgement of trading gains and netback commissions of $10,562,259 (calculated as the total of $10,995,695 less $433,436 allocated to Oxbow Canada, a non-defendant). MMB was also awarded $105,798.31 for undisclosed address commissions. Punitive damages of C$200,000 were awarded to express the court's condemnation of Oxbow's various breaches of fiduciary duty, including the taking of secret commissions and profits, failure to disclose conflicts of interest, and active misrepresentation. Costs were awarded to MMB. The U.S. currency judgments are to be expressed in Canadian currency in accordance with the Foreign Money Claims Act, R.S.B.C. 1996, c. 155.