Galvanic corrosion is a process that degrades metals electrochemically. This corrosion occurs when two dissimilar metals are located in contact with each other in the presence of an electrolyte, such as salt water, forming a galvanic cell.
But the memories of that tragic day 25 years ago are still vivid to many in Edmond. On Aug. 20, 1986, gunman Patrick Henry Sherrill shot and killed 14 co-workers, wounded six and then took his own life inside the post office where he worked.
Mass Shootings in the United States: 2009-2016. Using FBI data and media reports, Everytown for Gun Safety developed an analysis of mass shootings that took place between January 2009 and December 2016. At around 11:30 PM on Saturday, July 26, 2014, neighbors of the Smith family in Saco, ME heard gunshots ring out.