Filming in Leitrim last week. We’re producing a feature report on the Tellus Project for the Nationwide programme. The Tellus Border geochemical survey is currently underway in counties Sligo, Leitrim and Donegal. Teams of samplers are working across the area, collecting samples from small streams and rivers. These samples of the water, vegetation and sediment from the stream bed will be chemically analysed for a range of elements.