The silica destructor was a blast-propelled, self-seeking weapon developed by a top-secret lab working for the Venusian Ministry of Defence.
An anti-Dalek weapon, its purpose was to blind the Dalek, projecting molten glass onto its electronic eye which would immediately harden and render it opaque, blinding the Dalek soldier.
Schematics of the silica destructor and metal fatigue inducer were stolen by the Unispace agent EM2 on behalf of Earth. (GRAPHIC: Anti-Dalek Weapons [+]Loading...["Anti-Dalek Weapons (illustration)"])