First and Second screen test. 
Curves show accumulative 
percentages,weights and gold. 
Percentages 
a 
S 
3 
Aperture 
| Mesh lo 
First and Second screen test. 
Curves show values distributed 
in one ton of original. 
Aperture 1.89 -907° 427 277 =, 206 A37 089 —— .089 
Mesh 10 20 40 60 80 100 150 — 150 
4 
Fic. 3. 
