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.
Since the ancient history to the life of Scientist Nikola Tesla. The United States Post Office (U.S.P.O.) was created in Philadelphia under Benjamin Franklin on July 26, 1775 by decree of the Second Continental Congress.It was not the first postal system ever though.istory covers them all. Since the ancient history to the life of Scientist Nikola Tesla. The United States Post Office (U.S.P.O.) was created in Philadelphia under Benjamin Franklin on July 26, 1775 by decree of the Second Continental Congress. It was not the first postal system ever though.