As part of our freshwater metals content research, we have taken a series of 20 sediment samples from a number of becks from the top of Little Langdale at Greenburn Reservoir down to Elterwater, and also 5 water samples along the way. The samples are being analysed for metal content to see if the old Greenburn Copper Mine (and all the other mine workings in the valley) are still having an impact on water and sediments downstream – and if so, how the concentrations might impact upon the flora and fauna in the catchment.