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.
DENVER â The United States Postal Service will accommodate the parade of people pursuing a postmark proving punctual posting of their 2012 tax returns on April 15, Tax Day. All area Post Office retail windows will be open with regular customer service hours on Monday.ENVER â The United States Postal Service will accommodate the parade of people pursuing a postmark proving punctual posting of their 2012 tax returns on April 15, Tax Day. All area Post Office retail windows will be open with regular customer service hours on Monday.