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.
Columbine Shootings: April 20, 1999. At approximately 11:19 a.m., Eric Harris and Dylan Klebold, dressed in trench coats, began shooting fellow students outside Columbine High School, located in a suburb south of Denver. The pair then moved inside the school, where they gunned down many of their victims in the library. By approximately 11:35 a.m., Klebold and Harris had killed 12 students and a teacher and wounded more than 20 other people. Shortly after 12 p.m., the two teens turned their guns on themselves. Did You Know?