Non–GAAP Measures
Cash Cost
Northgate has included net cash costs of production per ounce of gold in the discussion of its results from operations, because it believes that these figures are a useful indicator to investors and management of a mine's performance as they provide: (i) a measure of the mine's cash margin per ounce, by comparison of the cash operating costs per ounce to the price of gold; (ii) the trend in costs as the mine matures; and, (iii) an internal benchmark of performance to allow for comparison against other mines. However, cash costs of production should not be considered as an alternative to net earnings or to other Canadian GAAP measures and may not be comparable to other similarly titled measures of other companies. A reconciliation of net cash costs per ounce of production to amounts reported in the Statement of Operations is shown in the table below.
Cash costs include financial data and gold production of Perseverance from February 19 to December 31, 2008.

