Mr. Eoin McGrath:

We keep a quarry register, which was last updated in 2014. We are in the process of redeveloping that into an online database, essentially, where we can track what quarries are out there and who is producing what. At the moment, we do not have a particularly good handle on the number of quarries throughout the State. That is because quarries open and close due to market demand. Sometimes quarries are open on certain days a week or for particular materials, or they are open in response to a large infrastructure project and then they close when the project is completed.