RONNIE KASRILS
Yes sure, a DLB stands for dead letter box, it's from the clandestine literature and is common internationally and in an underground struggle it becomes necessary to safeguard the security and secrecy of people and their identities.  It's obviously very risky for me to come and meet you supposing you're a member of the liberation movement or the underground and come to your house and bring you money or a fake passport or a gun or leaflets so we will set up a DLB between each other.  I will take the material and hide it somewhere safe, it could be simply in the hollow of a tree trunk or it could be in a hole in the ground, it could be under a floorboard somewhere and I then get somebody to take a sketch to you or the instructions which indicates to you how to find that weapon or money or material so you then can safely go to take it without the two of us meeting.  So in relevance to what's happened in South Africa, we developed such means in terms of bringing weaponry from outside the country, people would come inside, they would create DLB's and we would later bring the sketch to you as say the organiser of a Soweto MK unit.  You would then be able to receive that material and in the period of the '90 - '94, we in fact had to resort back to some of these methods in order to distribute material.