This category includes the costs associated with reclamation and disposal of components and materials. In some companies, these costs are the concern of the maintainability engineer. In such cases, even in the R&D phase, the maintainability engineer can anticipate the PR&P phase by addressing in design recommendations: material durability, environmental concerns, statutory regulations governing material disposal, and the methods and locations where reclamation and disposal might be performed. Special attention should be paid to the reclamation of precious metals and the disposal of hazardous or radioactive materials. During PR&P, lessons learned files are updated, and in-depth tear-down analyses of selected components are often conducted to update service life data.