High-level radioactive waste management concerns how radioactive materials created during production of nuclear power and nuclear weapons are dealt with.
Wikipedia

Canada is a North American country stretching from the U.S. in the south to the Arctic Circle in the north. Major cities include massive Toronto, west coast film centre Vancouver, French-speaking Montréal and Québec City, and capital city Ottawa. Canada's vast swaths of wilderness include lake-filled Banff National Park in the Rocky Mountains. It's also home to Niagara Falls, a famous group of massive waterfalls. (V)

Wikipedia