Hydery Milling Company (Private) Limited v Grain Marketing Board

Hydery Milling sued the Grain Marketing Board (GMB) for damages for breach of contract. The GMB had originally contracted with Makombe Industries (Private) Limited to sell rain-damaged wheat, which contract was subsequently ceded/assigned to Hydery Milling to the extent of 6,000 tonnes at $950 per tonne (with monthly $20 increases). The GMB was only able to supply 4,148.779 tonnes by May 1996. To fulfill its contractual obligations to supply flour to its customers, Hydery Milling had to purchase undamaged wheat at $2,850 per tonne to make up the shortfall. The High Court granted absolution from the instance, holding that Hydery Milling was not a party to the contract. The GMB also counterclaimed successfully in the High Court.

• Whether Hydery Milling was a party to the contract with the GMB, notwithstanding that the original contract was between GMB and Makombe Industries
• Whether the parties' conduct and the GMB's admission in pleadings established a contractual relationship between Hydery Milling and GMB
• Whether there was a breach of contract and, if so, by which party
• What was the proper quantum of damages for the shortfall in supply
• Whether Hydery Milling had a duty to mitigate damages by raising flour prices

The appeal succeeded with costs. The following order was substituted: (1) Judgment for plaintiff (Hydery Milling) in the sum of $3,072,993.60 with interest from date of judgment to date of payment; (2) Judgment for defendant (GMB) on its counter-claim in the sum of $1,716,971.94 with interest from 14 May 1997 to date of payment; (3) The defendant is entitled to set off the amount owed to it against the amount it owes the plaintiff, and shall pay the balance to the plaintiff; (4) Each party shall bear its own costs in the High Court.

The binding legal principles established are: (1) Where a party admits a material fact in its pleadings, that fact is established and does not require proof, and the admission binds the party unless formally withdrawn. (2) The true nature of a contractual relationship is determined by examining the parties' conduct and how they actually performed the agreement, which may demonstrate assignment or cession even where the formal documentation suggests otherwise. (3) A party alleging that its counterparty breached a contract cannot simultaneously deny the existence of that contract - such positions are mutually inconsistent. (4) In calculating damages for breach of a supply contract, where the innocent party must purchase substitute goods at a higher market price to fulfill its own contractual obligations, damages are properly calculated as the difference between the contract price and the substitute price, multiplied by the quantity not supplied. (5) A party cannot be expected to mitigate damages by raising its own prices when it is contractually bound to supply goods at fixed prices to its customers.

McNally JA observed that had the GMB genuinely intended to dispute that Hydery Milling was a party to the contract, it should have excepted to the declaration on the ground that the wrong parties were involved, rather than filing a plea and defending on the merits. The court also noted that the parties' actions - including GMB handing over wheat to Hydery Milling, corresponding with them about availability, and billing them directly - were "perhaps most importantly" indicative of their true contractual intentions. The court cited the general principle from Christie on Contract (3rd ed., pp. 60-62) and Hersch v Nel 1948 (3) SA 686 (A), particularly Schreiner JA's judgment at 691 et seq., that parties' actions are often the best guide to their intentions.

This case illustrates important principles in Zimbabwean contract law regarding: (1) the determination of contractual relationships based on parties' conduct and actions rather than strict formalities; (2) the binding nature of admissions in pleadings - an admitted fact does not require proof and a party cannot later resile from such admissions without proper application; (3) the proper approach to assignment/cession of contracts with third party consent; (4) the assessment of damages for breach of contract based on the difference between contract price and market price for substitute goods; and (5) limitations on the duty to mitigate where a party is bound by pre-existing contractual obligations at fixed prices.