Half of the world's production of silver is obtained as a by-product in the processing of lead, copper and zinc ores. Sterling silver is used for jewelry and silverware, where appearance is important. Silver is used to coat smooth glass surfaces for mirrors. Also, it is used widely in the circuitry of electrical and electronic components. Argyrol, a silver-protein compound, is a local antiseptic for the eyes, ears, nose and throat.
Silver is of utmost importance in photography.
Bayer Corporation is a research-based company with major businesses in health care and life sciences, and chemicals.