The file comprises papers relating to a wayleave for the Llanelly & District Electric Supply Co. Ltd to carry their Llanelli-Carmarthen overhead line through the Cilgwyn estate in the parish of Llangyndeyrn.

Leaflets circulated as part of the campaign against a proposals by Green Gen cymru to run a 132kV power line on pylons through the Tywi Valley to connect Nant Mithil Energy Park in the Radnor Forest in Powys to a new National Grid substation near Llandyfaelog, between Carmarthen and Pont Abraham.