Several shots from different angles of an helicopter flying and landing near a lake, of biologists of the Freshwater Institute at work on an experience on oil spilling in the lake separate in two parts by a fence of plastic sheets, of biologists taking water samples. AERIAL SHOTs of a boat anchored on a river bank, of helicopter pilot, of several lakes, of men aboard helicopter taking pictures. Various HASs of oily surface water flowing down a river through rocks with the sun reflecting in it. Several shots from different angles of oil pipelines, equipment and tanks in the bush, one person visible walking by in two shots. Various shots taken at the water surface of the lake 305 near Kenora, of a little shed on lake bank, of a rowboat passing close to camera with Robet G. Korstens rowing it.