PLATINUM Group Metals (PGMs) output at the Shurugwi-based Unki mine increased 13 percent to 232 100 ounces in 2022 from 204 600 ounces in 2021, but fell in the fourth quarter, according to parent company Anglo American. Advertisements The miner’s fourth quarter PGM production was down 17 percent at 52 600 ounces compared to 63…