IAMS had planned to publish a monograph on the prehistoric mine workings of Rudna Glava, which are of major importance for the history of mineworking, in 1985. However, during the excavation in 1984 a new type of mine workings was discovered which made a re- assessment necessary. The final report, now scheduled for 1987, will include a full description of these earliest, incipient shaft- and-gallery mining systems, known only so far at Rudna Glava. We publish here a first communication from Professor Borislav Jovanovic, the excavator, on his discoveries.