• Calumite is produced from blast furnace slag, a by-product of the iron-making process. It’s use in the glass batch reduces the need for quarrying virgin raw materials by partially replacing limestone, dolomite and alumina containing minerals.
  • Calumite also counts towards the recycled content of glass containers, as defined by the British Glass calculation for recycled content.
  • Use of Calumite reduces the energy required to melt the glass batch, reducing energy consumption and associated emissions
  • Use of Calumite reduces the levels of carbonates added to the batch therefore significantly reducing process CO2 emissions.

Hanson Sustainability Policy

Calumite Ltd is a division of Hanson UK.

For the sustainability policy of Hanson UK Click Here
For the full sustainability report of Hanson UK Click Here

Hanson Social Value Policy

For the social value policy of Hanson UK Click Here