Poseidon Nickel Ltd's (ASX:POS) Peter Harold updates Proactive's Andrew Scott on efforts towards their goal of beginning nickel production in 2022. He says by the third quarter of this year they're expecting a detailed mine plan to be produced for its Golden Swan discovery at the Black Swan project with a final investment decision by year-end. Preliminary metallurgical test-work has indicated that Golden Swan could produce a high-grade nickel concentrate with low impurities.