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.
While school was in session, Hugh Claggett shot through the school house's front door while on his way home from work. No one was hurt, and he was fined $20. April 12, 1919: Ogden City, Utah: 0: 1: During a high school assembly, six boys shot off their guns.