The symposium was conceived and organized by the New Zealand Screwcap Initiative, started in 2001 by a group of Marlborough wineries frustrated by rising levels of contamination of their wines from TCA in natural corks. Since then, screwcap use in New Zealand has spread rapidly and it is estimated that over 70 per cent of the country's 2004 vintage wines will be sealed by screwcap. Read more at: http://www.wineoftheweek.com/guest/0411screwcaps.html