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.
The USPS has been grappling with a budget shortfall and plans to close up to 3,700 post offices, according to NPR. No post offices in the New York City area, the Los Angeles area or the Houston area will be staying open later than usual on Tax Day, according to the USPS website.New York's main post office will be open until 10 p.m. as usual.his is the first year that no central Ohio post offices will be open late on tax day this year, according to the Columbus Dispatch. A USPS spokesman told the Dispatch that it's not really cost effective to keep post offices open late.