[1][2] This material is discharged from the moving grate of municipal solid waste incinerators.
The aggregate uses include: Alternatively, if there are no local markets for the IBA the material is disposed of in a landfill.
On average, 63 kg of ferrous materials are removed from a single tonne of ash.
[1] Foam concrete made from IBA led to an explosion in the United Kingdom in 2009.
[4] The Health and Safety Executive updated their guidelines to suggest IBA aggregates can only be poured in open air, in well ventilated areas, and no spark generating tools, such as disc cutters and angle grinders, can be used during setting.