speculation is rife as some have linked Joburg gas explosion disaster to the illegal mining zama-zamas as an underground gas line explosion could be the main source of this catastrophic ordeal that has left Bree and Rissik Street cracked open. Videos making rounds have depicted huge and lengthy cracks that have pierced through the roads causing what appears to be a large sinkhole and uneven surface in that part of the JHB CBD. Bongiwe Zwane spoke to Former employee at Joburg Roads Agency and now an independent Consultant Conel Cassius McKay