Technology Programme INVENT took place in Finland from 1991 to 1996. In this programme over 100 R&D projects were completed and over 20 Million US dollars used to promote industrial ventilation equipment, systems and services. Based on this, an European COST Action, G3 Industrial ventilation started to further promote this technology. The main aim of the action is to write the "bible" of Industrial Ventilation, DGB, Handbook of Industrial Ventilation. The first part of the book, fundamentals, comes out end of year. The publisher is Academic.