Most of the plants I have visited in recent months have an aging workforce that is highly skilled in performing their duties. Some of these employees are willing to retire in the coming years. That in itself is not a problem. The problem is that most of these employees data collected in recent years is only in their heads and not on paper or on a computer. This means that when they walk through the door at the end time of departure of their companies, the information will be lost to the company to invest in learning all over again (often at a high price).