A second blast test of the Security Devices Limited Mask-visor system was carried out in May 2010. This follows a first blast test in August 2009. While the 2009 blast test employed plastic explosive (PE) as an alternative to TNT, the 2010 test used 240g of pressed TNT as explosive charge. The report on the 2010 Mask-visor test as well as a test video report can be downloaded from the Security Devices website.
