Page 22 - pd248 April17 mag-web
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COVER

The proposed locations for the pit (top), process plant (middle) and tailings dam (bottom)    “Being on site and being able to see
                                                                                            the high-grade chips directly and trans-
                                                                                            ferring that to instant decisions on site, as
                                                                                            opposed to waiting for assays, unlocked
                                                                                            that strategy of being able to high-grade
                                                                                            the deposit and keep it to a modest size.

                                                                                              “When we went to infill and upgrade
                                                                                            drilling we knew exactly what we were
                                                                                            looking for and structurally where it
                                                                                            should go, so we were able to focus on
                                                                                            delineating three or four discreet high-
                                                                                            grade zones that will actually provide a
                                                                                            very high mill [head-grade] feed and give
                                                                                            the project a huge advantage in its early
                                                                                            years.”

                                                                                              Most graphite companies have typi-
                                                                                            cally built up large resources at their pro-
                                                                                            jects, but Mulligan knew that approach
                                                                                            would only see Walkabout fall further
                                                                                            behind in the race to become a producer.

                                                                                              A simple strategy was proposed – de-
                                                                                            velop the project around a high-grade,
                                                                                            premium product that could be one of
                                                                                            the first to market. To achieve that, the
                                                                                            company had to constrain the initial mine
                                                                                            development to something that was both
                                                                                            manageable and reasonable in size.

                                                                                              “By far the most significant risk as-
                                                                                            sociated with this project is the market,
                                                                                            but that is something associated with all
                                                                                            graphite projects,” Mulligan said. “We
                                                                                            wanted to bullet-proof this project against
                                                                                            that risk through executing a three-tier
                                                                                            strategy of grade, product and time.”

                                                                                              Completion of the drilling programme
                                                                                            led to a maiden inferred resource of
                                                                                            15.3mt @ 10.1% TGC for 1.542mt con-
                                                                                            tained flake graphite in January 2016. A
                                                                                            scoping study was to be released mid-
                                                                                            year, but ASIC changes to reporting reg-
                                                                                            ulations dictated a higher resource clas-
                                                                                            sification was required before the results
                                                                                            of the study could be made public.

                                                                                              It turned out to be a blessing in disguise
                                                                                            for Walkabout, which after punching
                                                                                            more holes into the project, announced
                                                                                            an upgraded resource of 29.8mt @
                                                                                            10.9% TGC for 3.25mt contained graph-
                                                                                            ite, including a higher-grade domain of
                                                                                            4.7mt @ 22.8% TGC for 1.073mt con-
                                                                                            tained graphite.

                                                                                              “We ended up with a 165% larger re-
                                                                                            source, a higher grade and the entire
                                                                                            scoping study and DFS calculated or
                                                                                            modelled on measured and indicated re-
                                                                                            sources only,” Mulligan said.

                                                                                              “In terms of the drilling, the entire
                                                                                            measured, indicated and inferred re-
                                                                                            source of 29mt has been defined off
                                                                                            3,500m of drilling, whereas some of our
                                                                                            peers have done up to 20,000m. It’s not
                                                                                            necessary to do that, in our view.

                                                                                              “When you compare our quarterly
                                                                                            cash flow expenditures against our peer
                                                                                            group, we are the cheapest by a long
                                                                                            way for the last two and a half years and

PAGE 22 APRIL 2017 AUSTRALIA’S PAYDIRT
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