Ashley, Michigan - 48806. Ashley is located in eastern Gratiot County just a mile north of M-57. This village was organized in 1884, named after John M. Ashley, then owner of the Toledo, Saginaw and Muskegon Railroad. He built a spur to the town at that time - most likely for the transportation of lumber harvested in the area.
While silver is not toxic, repeat intake of small amounts of silver over time can result in argyria. In people with this condition, silver builds up in body tissue, giving it a gray-blue appearance when exposed to the sun. In addition, the ingestion of large amounts of silver can have negative effects on the body.
Because pure silver is very soft, most silver used for these purposes is alloyed with copper, with finenesses of 925/1000, 835/1000, and 800/1000 being common. One drawback is the easy tarnishing of silver in the presence of hydrogen sulfide and its derivatives.