Does anyone know the location of the Benoni Workers Hall that was bombed in 1922?

My name is Rudolf du Plessis and I am an amateur photographer and heritage enthusiast. As a Benoni native, I have been reading about the Rand Rebellion of late and was wondering if anyone from the heritage community knows the location of the Benoni Worker's Hall that was bombed by the Royal Air Force in 1922? I cannot seem to find anything online, and I would like to take some photographs of the location for the use of a photo essay I am planning on the topic. 

Thank you in advance.

Rudolf - duplessis.rudolfp@gmail.com