| In addition to the mineral ingredients such as those listed above, a glass batch traditionally consists of 25 to 60 percent cullet. |
| Colour-sorted glass is crushed and sold to glass manufacturers as cullet, an essential ingredient in glassmaking. |
| Then the material is transported to the cullet silos and fed into the melting process from there. |
| Approximately 80 per cent of the glass now being made in Irish Glass is from cullet or recycled glass. |
| One of our earliest industrial containers, glass is made by melting sand, soda ash, limestone, and cullet in furnaces heated to 2,700 degrees Fahrenheit. |
| Ireland does not have another manufacturing facility with a similar capacity to absorb glass cullet. |
