Strategic Precious Metals Processing (SPMP) plans to produce 8,000 to 10,000 tonnes of antimony at its processing facility in Oman's Sohar free zone this year, its first full year of production, but bump that up to 20,000 tons by 2022. The facility should also be able to process up to 50,000 ounces of gold per year and gypsum in the process of …