Legend Mining Limited (Legend) announced the completion of the processing phase of the data from the 3D seismic survey over a +24km2 area at the Octagonal prospect within the Rockford Project, Fraser Range, Western Australia. HiSeis field teams carried out the survey data collection in November 2022. Processing has now been completed, with incorporation of existing data sets and further interpretation underway.

A comprehensive technical discussion is contained in the body of this announcement. HiSeis was engaged by Legend to conduct a 3D seismic survey at the highly prospective Octagonal prospect within the Rockford Project, Fraser Range, WA. The aim of the survey was to define the architecture of the Octagonal Intrusive Complex (OIC) in relation to the stratigraphic package, to a depth of investigation of a minimum 1500m below surface.

The confidence to conduct this +$1M survey was based on the results Legend has generated from the drilling of seismic targets at the Mawson deposit in 2022. iSeis has now completed the data processing phase of the 3D seismic survey data for the Octagonal prospect with time and depth modelling resulting in the delivery of the final 3D cube. The results highlight the excellent correlation between the seismic dataset and the existing structural interpretation.

The newly acquired 3D seismic data supports the exploration model that the OIC continues at depth below drilling completed to date. 3D seismic reflectors clearly map the eastern and western sidewall contacts of the OIC, confirmed by diamond drilling, and importantly the basal contact. The limited RC and diamond drilling completed to date has intersected multiple intervals of massive, semi- massive, net textured, stringer and disseminated pyrrhotite-pentlandite-chalcopyrite sulphides associated with the mafic/ultramafic intrusives of the OIC.

This mineralisation demonstrates all the characteristics of a fertile magmatic Ni-Cu sulphide system, akin to the known deposits of Nova-Bollinger, Silver Knight, and Mawson in the Albany-Fraser Belt. Significantly, Octagonal sits within the same structural corridor that host the Nova-Bollinger and Silver Knight intrusions and Ni-Cu-Co deposits.