2004 Indian Ocean earthquake and tsunami and a network of sensors is needed to detect it. Setting up the communications infrastructure to issue timely warnings is an even bigger problem, particularly in a relatively impoverished part of the world. Tsunamis are more frequent in the Pacific Ocean than in other oceans because of earthquakes in the "Ring of Fire". Although the extreme western edge of the Ring of Fire extends into the Indian Ocean (the point where the earthquake struck), no warning system exists in that ocean. Tsunamis there are relatively rare despite earthquakes being relatively frequent in Indonesia. The last major tsunami was caused by
Ring of Fire (Northern Ontario) that will spin-off jobs and economic activity for generations". In May 2012, Cliffs Natural Resources announced its intention of investing $3.3-billion in Northern Ontario's Ring of Fire region, which would include a chromite mine, a transportation corridor and a smelter in Sudbury, Ontario. Cliffs initially invested $550-million to acquire and begin development. By 2013, Cliffs had suspended the project "after numerous delays and difficult discussions with the province [of Ontario] and the First Nations communities". Cliffs sold its assets to the smaller Canadian company, Noront Resources Ltd. for USD20 million. In February 2013, KWG Resources, a Toronto-based junior miner, released