The SEIBOOST A cast booster is particularly recommended for less sensitive explosives such as nitrate-fuel oil (ANFO) and bulk emulsions. This product is designed for use in drilling holes over 80 mm in diameter.
The cast booster SEIBOOST A looks like a rigid plastic cylinder filled with a powerful explosive blend that is made up of TNT, PENTRITE, and ROX. The one or two detonator(s) and the detonating cord go through the SEIBOOST P.:s central hole and the detonators can be put in two cases at the bottom. Two SEIBOOST A can be superposed to intensify the initiating power in hard drilling conditions.