3.1 Introduction3.2 Lessons of the past3.3 Big problems with small materials3.4 Controls and risk assessment3.5 What needs to be done?3.6 Answering the call for precaution?—SWA approach to ENMs post 20093.7 Emerging from the shadow: 2009 SWA report3.8 A big shift: 2010–20123.9 A move toward higher levels of control3.10 ConclusionsAcknowledgmentReferences