Mike Zivcic is a Chief Operating Officer at Challenger Gold. He possess expertise in mining engineering, base metals, leadership, management, surface mining and 29 more skills. Colleagues describe him as "Met Mike for the first time when he visited the mine to do some needed upgrades to equipment and train our geologists on the use of the equipment. Found him to be very knowledgeable, skilled and an excellent trainer. His visit helped us improve ore recovery and his guidance helped us to get greater value from the movement monitoring system. I can highly recommend him.", "Mike demonstrates an in depth knowledge in production blast and its impact on dilution and ore loss. His implementation of BMT in Taparko has positively changed the approach previously used in monitoring movement of ore blocks prior to mining to the Mill. I will highly recommend Mike for his expertise.", and "I knew Mike in January 2015 when he was engaged by Barrick Niugini Porgera as a Blast Movement consultant from Blast Movement Technology to provide tranining for Porgera Grade Control team on blast movement and ore translation using BMM Explorer. He has sound knowledge in blasting and BMM technology where he was able to explain the blast dynamics of Porgera within less time. He is truely an expert in Blast Movement complimented by the experience he posses as drill and blast engineer. Mike's recommendation on blasting has seen fruition in Porgera where BMM recovery has increased from 76% to 98%. As a grade control geologist I can now actively have an input in blast designs as far as grade control is concerned. I fully recommend Mike to any organisation that need the technology and expertise he possess. Kind regards, Julius Pakule Open Pit Geologist Porgera - Papua New Guinea."