SubtekTM Velcro bulk emulsion explosive is a primer sensitive pumped explosive which has the appearance of an opaque fluid, similar in viscosity to heavy grease. Subtek™ Velcro has excellent water resistance as an inherent characteristic the emulsion structure.
Subtek™ Velcro is manufactured at the blast site from an Orica designed underground pumping unit. This combines non-explosive emulsion with sensitiser to deliver the water resistant explosive product into the blasthole. The density of the final product can be varied to suit ground conditions or blast design. Subtek™ Velcro is specifically designed for use in upholes, and is also suitable for downholes and development headings. It is not suitable for ground containing reactive sulphide.