The IWDF, established in 1992, is Australia’s first long term disposal site for intractable waste - materials that are a management problem because their toxicity or chemical or physical characteristics make them difficult to dispose of or treat safely.
Intractable Waste Disposal Facility Brochure
Fact sheet
Western Australia’s Intractable Waste Disposal Facility (IWDF) in Mt Walton East two page brochure