Provisions are recognized where a legal or constructive obligation has been incurred as a result of past events, it is probable that an outflow of resources embodying economic benefit will be required to settle the obligation, and a reliable estimate of the amount of the obligation can be made. If material, provisions are measured at the present value of the expenditures expected to be required to settle the obligation. The increase in any provision due to the passage of time is recognized as accretion expense.
The Company records the present value of estimated costs of legal and constructive obligations required to restore properties in the period in which the obligation is incurred. The nature of these restoration activities includes dismantling and removing structures, rehabilitating mines and restoration, reclamation, and re-vegetation of affected areas.
The fair value of the liability for a rehabilitation provision is recorded when it is incurred. When the liability is initially recognized, the present value of the estimated cost is capitalized by increasing the carrying amount of the related mining property or exploration and evaluation asset. Over time, the discounted liability is increased for the change in present value based on the discount rates that reflect current market assessments and the risks specific to the liability, which is accreted over time through periodic charges to income or loss. A revision in estimates or new disturbance will result in an adjustment to the provision with an offsetting adjustment to the mineral property or the exploration and evaluation asset. Additional disturbances, changes in costs, or changes in assumptions are recognized as adjustments to the corresponding assets and reclamation liabilities when they occur.