Cost of sales relate to all costs associated with operating the mill and are expensed as incurred as the Company does not control the goods or services before they are transferred to a customer. Revenue is recognized when the ore processing service is rendered by the Company, accepted by the customer, collection is reasonably assured, and performance obligations are satisfied. As a result, the recognition of milling costs does not necessarily coincide with the recognition of the related revenue and such costs are not matched to specific revenue periods.

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