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.
U.S. POST OFFICE SHUTTING DOWN. WASHINGTON â The U.S. Post Office is bankrupt and will be closing for good on  December 31st, 2013. The United States Postal Service is so low on cash that it wonât be able to make a $5.5 billion payment due this month and will, therefore, have to shut down. The last day of mail delivery will be Tuesday, December 31, 2013. âThereâs no way we can handle the holiday rush this year, we can barely handle a normal delivery day,â said a Post Office insider. The Obama Administration feel that the shut down will save money and they do not feel that Americans will miss their mail.