title: Developing a registry of workers involved in nanotechnology: BASF experiences.
abstract: OBJECTIVE
  To assist BASF in the establishment of a registry of workers involved in nanotechnology.
  
  
  METHODS
  The initial step was a complete inventory of nanomaterials and sites of use. Guidance was developed to clarify which particulate nanomaterials were to be included in the survey. Site management was then contacted by the medical department to obtain a list of workers.
  
  
  RESULTS
  The time line for collecting data ranged from several months to a year, depending on the information needed, and presented challenges based on the lack of global definition and labeling of nanomaterials. Less than 50 nanomaterials are used as raw materials in less than 10% of the sites globally. In North America, less than 5% of sites and 5% workers use nanomaterials.
  
  
  CONCLUSIONS
  Further work is required to integrate the inventory, registry, and exposure assessments.
authors.affiliation: BASF Corporation, Florham Park, NJ 07932, USA. raymond.david@basf.com
authors.forename: Raymond M
authors.initials: RM
authors.lastname: David
authors.forename: Michael
authors.initials: M
authors.lastname: Nasterlack
authors.forename: Stefan
authors.initials: S
authors.lastname: Engel
authors.forename: Patrick R
authors.initials: PR
authors.lastname: Conner
mesh_terms: D006801:Humans; D049329:Nanostructures; D036103:Nanotechnology; D016273:Occupational Exposure; D016272:Occupational Health; D012042:Registries