Many of these satellites have been retired due to normal end of useful life, obsolescence or failure; yet many still have valuable components, such as antennas, that could last much longer than the life of the satellite. (treehugger.com)
Destroying electronic business records once they've reached the end of their useful life isn't as simple as hitting the delete key. (inc.com)
Equipment needs to be replaced as it reaches the end of its useful life.» (businessinsider.com)