It will be shown that emulsions can be mass produced and automatically scan
ned in large quantities. CHORUS demonstrated the first large-scale applicat
ion. Emulsions can be used to search for rare events in a high track densit
y environment like DONUT. Heavy target masses as in OPERA are possible. The
use of emulsions is getting more and more easier. (C) 2000 Published by El
sevier Science B.V. All rights reserved.