Rio Tinto (NYSE: RIO ) ( OTCPK:RTPPF ) ( OTCPK:RTNTF ) has been aggressively investing in ramping up its production and improving its position in the mining industry for quite some time. The stock has not providedI am a dedicated financial risk manager and investor specializing in financials, consumer, and technology industries. I have been involved in the investing world for over seven years, making deep analyses and managing different types of portfolios.I believe in deep research, prioritizing business m ...