A large body of research created these collections. The initial reason for collection may have been for mapping, biostratigraphic or taxonomic investigations. Later research relies upon continuing access to these specimens. This later research may be entirely different from the original.
Currently NPL carries out research both in the area of digital management and curatorial techniques as well as actively promoting and describing new field projects and new research using specimens that are already part of the repository.
Citations to the research studies are tracked, and demonstrate ongoing relevance of the collections.