Aim of survey The aim of our survey was to identify how many of our surveyed companies had suffered an impairment and to examine:

• the main causes of impairment
• the minerals of the projects that have been impaired
• the regions where the impaired projects are located
• the stage of development of the impaired projects
• the market capitalisation of the affected companies
• the nature and extent of disclosures made in relation to impairment