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 Queen Street massacre was a spree-killing â suicide that occurred on 8 December 1987 at the Australia Post offices at 191 Queen Street in Melbourne, Victoria.n 8 December 1987 at around 4:20 pm, Frank Vitkovic entered the building at 191 Queen Street, Melbourne, carrying a sawn-off M1 carbine in a brown paper bag. Vitkovic proceeded to the fifth floor office of the Telecom Employees Credit Co-operative where a former friend, Con Margelis, worked.