Silver jewelry can captivate with its shine, but over time, its surface can darken. Fortunately, there are many simple and effective home methods to clean silver and remove unsightly tarnish. Jewelry ...

silver, sulfur, thallium and zinc. In 1992 the Environmental Protection Agency determined that the use of phosphogypsum in road construction presents an unacceptable risk to public health. Since then ...

silver, sulfur, thallium and zinc. In 2018 DeSoto County commissioners denied a request from The Mosaic Company, the largest phosphate mining company in the United States, to dig an 14,000-acre ...