On a 2,600 square kilometres parcel of grassland that was once home to 300 species of dinosaurs, three Canadian entities, the military, the Alberta Energy Company and a community of rare and endangered animals provide an example of peaceful co-existence. For eight months of the year the Alberta Energy Company shares the land with Canadian and British military units; all shallow wells have been placed underground so the military can hold annual live-fire exercises. Gas reservoirs exists beneath 57 square kilometres of the range lying at 1,000 metres depth at 4,540 pounds of pressure, which can be increased to 2,050 pounds. The surface of the Suffield range belongs to the federal government, the mineral rights are held by the Province of Alberta, and proghorn antelopes, apparently unconcerned, graze on the ground as if the land belonged to them. They, and the golden eagles that nest in the banks of the South Saskatchewan River appear to be surviving the activities of their two giant co-habitants relatively well.