Retracing rare earth elements, which are widely used in high end electronics and green technologies, to their origins. The film, developed with photographer Toby Smith, documents their voyage from container ships and ports, wholesalers and factories, back to the banks of a barely-liquid radioactive lake in Inner Mongolia, where the refining process takes place. Unknown Fields Division, in collaboration with Kevin Callaghan, have used mud from this lake to craft a set of three ceramic vessels. Each is sized in relation to the amount of waste created in the production of three items of technology – a smartphone, a featherweight laptop and the cell of a smart car battery.