On May 26, 2015, Sustainable Nanotechnologies (SUN) began a survey on risk management of nanotechnology. A key objective of SUN is to build the SUN Decision Support System to facilitate safe and sustainable nanomanufacturing and risk management. It will integrate tools for ecological and human health risk assessment, lifecycle assessment, economic assessment, and social impact assessment within a sustainability assessment framework.  SUN seeks responses from personnel of companies involved in nanotechnology-related activities who are familiar with the risk management practices.