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.
by The Associated Press. A stone memorial to the 16 people and one fetus who died in the August 1, 1966 mass shooting is seen ahead of it being officially delegated at a ceremony on August 1, 2016 to mark the 50th anniversary of the killing at the University of Texas in Austin, Texas, U.S. on July 27,2016. JON HERSKOVITZ / Reuters.