Group Five Construction (Pty) Limited (appellant) entered into a contract with the Minister of Water Affairs and Forestry (respondent) for the construction of the Injaka dam and appurtenant works for the Sabie River Government Water Scheme. The appellant instituted a claim for moneys allegedly due under the contract. Four of the claims arose from claims submitted in terms of clause 51 of the contract, which entitled the appellant to claim for additional payment or compensation in prescribed circumstances. The contract was amended twice, affecting clause 61 and providing for a new dispute resolution mechanism involving a dispute review board. Under this mechanism, the board would make recommendations that became final and binding if accepted by both parties in writing. If recommendations were not accepted, either party could refer the matter to court within 60 days by giving written notice. The respondent raised a special plea of prescription. The parties placed agreed facts before the court and led evidence.