RE:Visual Capitalist from 2015: Case for Toll Milling in PeruYes, toll milling can be profitable but you need scale..... Dynacor has a 250 TPD mill and has averaged $91 US per oz net profit margin over the last 5 years..... Inca One says its breakeven is 70 TPD.... MNY will need to expand the 60 TPD mill it is acquiring to the permitted 100 TPD to be cash flow positive.