This is the executive summary of the full paper from 1993, which is well worth a read for several reasons and can be found (slowly) here: https://www.osti.gov/

This is the executive summary of the full paper from 1993, which is well worth a read for several reasons and can be found (slowly) here: https://www.osti.gov/biblio/10117359 https://www.osti.gov/biblio/10117359