The global mining industry uses high-risk mining practices and employs environmentally destructive mine waste disposal methods in Papua New Guinea (PNG) that are not tolerated in most other countries, including Canada. Canadian companies continue to severely affect major tropical rivers in PNG by using them as mine waste dumps. They have also dumped millions of tons of metal and chemical laden mine waste into PNG’s seas, and now, Nautilus Minerals out of Toronto plans to mine massive underwater sulphide deposits in the rich biologically diverse territorial waters of PNG.