Brimstone Symposium 2015 Papers are now available from last year’s Brimstone Vail, Vienna, and Abu Dhabi Sulfur Recovery Symposia are available for download by attendees. Sorry, but recent papers are available only to conference attendees. We have also posted papers from Vail 2010. We will continue to make papers from earlier sulfur symposia from time to time. Attendees from the last several years will be sent an e-mail with username and password for access to the Brimstone Presentations Archive.