At the Tasmania Mine, the mine sequence of metasedimentary rocks dip 50° to 80° towards the northeast. The gold mineralised Tasmania Reef is situated along a dextral strike-slip transfer fault system which obliquely traverses the Cabbage Tree Thrust slice stratigraphy. The reef is composed of a quartz-ankerite-sulphide vein system occupying a dilational regime within a northeast trending fault. The strongly developed portion of the Tasmania Reef in the Denison Group sediments has a strike length of approximately 400m with an overall dip towards the southeast of approximately 50° to 70°. The Tasmania Reef and associated fault structure is confined laterally along strike by the Cabbage Tree Thrust fault to the southwest and by the Cobblestone Creek Thrust fault to the northeast. The Tasmania Reef outcropped on Cabbage Tree Hill (120m above sea level) and has been intersected in drillholes to a maximum depth of over 1,500m below sea level, remaining open at depth.

The reef is divided into the West, East and Central zones, primarily on the basis of reef thickness and sulphide content, which is controlled to some extent by the host stratigraphy through which the reef system cross-cuts at a high angle. The Salisbury Hill Formation contains three discrete quartz pebble conglomerate units (Cabbage Tree, 2CG, and Wet Beds conglomerates) which are significant in the mine due to strong reef development in proximity to these units, thus generally defining the Central zone. ........

Beaconsfield Gold Mine, one of the biggest gold mines in Australia, is located in Northern Tasmania. Mine is suspended since June 2012 and its depth is 1,210 meters below surface.

The 350,000 tonne per annum capacity gold processing plant is currently under care and maintenance.

Re-Opening Plans comprices 2 phases:
Phase 1 Environmental Clean-Up & Early Gold Production:
- +100,000 tonnes of 3 g/t contaminated soil to be extracted from the Beaconsfield wetlands;
- Refurbish processing plant.
Phase 2 Underground Operations:
- Complete feasibility study – Q2 2021;
- Arrange project funding for the 3.6 km decline to reconnect into the existing mine working at the 430 metre level;
- Commence new decline box-cut Q4 2021.

NQ plans to re-open the mine by developing a new modern mine 3.6 km decline access into the Beaconsfield Mine from surface to reconnect into the existing mine workings at the 430 metre level. This new decline will be capable running large modern mining equipment and men/materials/rock from surface to anywhere in the mine environment and will allow for efficient low cost operations into the future.

Previous underground mining methods would be used again (sub level stoping).

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