Itronics' Pilot Scale PCB Refining Operation Helps Boost Silver Bullion Sales Itronics Inc., an emerging 'Cleantech Materials' growth Company that manufactures GOLD'n GRO Multi-Nutrient Fertilizers and produces silver, zinc, and critical minerals recovered from industrial and mining waste, has reported its 2020 silver sales were up 224% over the prior year. Full year 2020 silver sales are $141,500 compared to $43,700 in 2019. The increase includes results from sales of silver bullion, silver-bearing glass, and silver-bearing x-ray film. The proceeds from silver bullion sales include the value of gold and copper recovered from discarded printed circuit board assemblies. "In early January we forecasted a significant increase in full year silver sales," said Dr. John Whitney, Itronics President. "This year we were able to continue to improve the efficiency and reliability of our 'Breakthrough' pilot scale printed circuit board refining operation despite Covid-19. Silver, gold, and copper prices increased significantly this year which also helped our results."