The appellant contractor entered into a contract with the Crown to build a dam.
The contractor encountered soil conditions significantly different from those indicated in the plans, leading to increased dewatering costs, and also faced delays due to additional work ordered by the Crown.
The contractor sued for additional costs.
The Supreme Court of Canada held that the contractor could not recover for the soil mistake because it failed to give the required notice under the contract.
However, the Court allowed the appeal in part, awarding the contractor compensation for the costs of delays caused by the additional work, as provided by the contract's clauses on extra work.