Stephen Stewart

Senior Metallurgist @Us Mine Corporation

Ione, CA, US

Optimized mineral processing, increasing TiO₂ concentrate from low 20% to mid-30% within the first week.Maintained customer-specified zircon and ilmenite concentrations by fine-tuning gravity concentration circuits and training operators on process adjustments.Improved silica sand wet mill production by optimizing upward current classifiers and spirals, while training technicians for sustained efficiency.Enhanced process flow in the silica dry mill by increasing throughput of the dryer, screening system, and magnetic separation plant.Managed production, exploration, and R&D data by coordinating with lab technicians, lab managers, and plant superintendents.Oversaw commissioning and operation of dry mill utilizing rare earth magnetic rolls, doubling high-grade glass sand production capacity from 15 to 30 tons per hour.Advised plant upper management on process improvements, staffing recommendations, and strategic planning.

Jacksonville University

BBA