4. Appendices

A number of important choices have been made in defining the boundaries for conducting LCA work on ELT recovery. In particular, these choices concern the delimitation of upstream and downstream boundaries, and the identification of traditional routes for the substitution of recovered ELT materials.

The choices made on these points are inescapable when the LCA concerns a system whose life cycle cannot be clearly delimited as a finite set of operations that fall between initial resource extraction stages (the cradle) and an end-of-life stage...