Group 6 Metals Limited (ASX:G6M): Underground Mining Begins at Dolphin Tungsten Mine

Aditi Sarkar

28 October 2026 03:07 PM AEDT

Group 6 Metals Limited (ASX:G6M): Underground Mining Begins at Dolphin Tungsten Mine

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Highlights

Underground mining commenced at the Dolphin Tungsten Mine at the end of the June 2026 quarter.
Quarterly ore processing reached 77,953 tonnes, compared with 72,351 tonnes in the preceding quarter.
The company reported 21,297 metric tonne units of tungsten concentrate production for the June quarter.
June-quarter tungsten concentrate sales totalled 25,514 metric tonne units.
Plant recovery, underground ore grades and capital requirements remain operational considerations.

Group 6 Metals Limited (ASX:G6M) operates the wholly owned Dolphin Tungsten Mine on King Island, Tasmania, producing tungsten concentrate for industrial supply chains. The move into underground mining during 2026 changes the source of ore supplied to the processing plant. The key operational question is how underground development, ore grades and plant recovery affect production as the mine transitions from processing lower-grade material.

Underground Development Reaches a New Phase

In its June 2026 quarterly activities update, Group 6 Metals (ASX:G6M) reported that underground mining had begun at the end of the quarter. The change is significant because the underground programme is intended to provide higher-grade feed than material being treated from existing stockpiles. Commencement alone, however, does not establish the rate at which underground ore can be mined or processed.

The company outlined an underground ramp-up and operating requirements covering access, ground conditions, ventilation, mining equipment and ore haulage. Group 6 Metals (ASX:G6M) must coordinate those activities with its processing operation on King Island, where freight and access to specialist services are relevant practical constraints.

June Quarter Output and Sales

The company reported processing 77,953 tonnes of ore in the June 2026 quarter, compared with 72,351 tonnes in the previous three months. Group 6 Metals (ASX:G6M) also reported production of 21,297 metric tonne units (MTUs) of tungsten concentrate. These figures describe activity at the plant before underground ore became a substantial component of feed.

Tungsten concentrate sales were 25,514 MTUs during the quarter, with reported sales revenue of $69.1 million and cash receipts from customers of $61.0 million. Sales above quarterly production can reflect deliveries from inventory, so the relationship between shipments, stocks and fresh output matters when assessing results. The company also reported no lost-time injuries for the period.

At 30 June 2026, Group 6 Metals (ASX:G6M) reported closing cash of $49.5 million and access to a further $2.5 million in undrawn debt facilities.

Funding and Quotation Developments

A 2026 recapitalisation process addressed the company’s financing and ASX quotation arrangements. The ASX announced reinstatement to quotation on 30 July 2026 after the company satisfied the conditions for resuming trading. This followed a prolonged suspension and was a corporate milestone separate from Dolphin’s mining performance.

For Group 6 Metals (ASX:G6M), operational cash generation will depend on actual concentrate production and deliveries, realised tungsten pricing and the costs of underground extraction and processing. Larger revenue figures for an individual quarter do not by themselves remove risks arising from project concentration or site logistics.

Operational Factors to Monitor

The timing of underground ore access, achieved head grades and recoveries through the plant are relevant to subsequent performance. Changes to ground conditions or development schedules can alter planned output and costs. The Dolphin mine’s island location may also affect equipment replacement, transport and maintenance arrangements.

Reported operating cash and the cost of further underground development provide another way to assess the transition. Formal guidance, where subsequently released by Group 6 Metals (ASX:G6M), should be distinguished from figures achieved in completed reporting periods. Tungsten prices are also external to the company’s operational control.

Key Insights

Group 6 Metals (ASX:G6M) entered a new stage of activity at Dolphin with the start of underground mining in the June 2026 quarter. Reported processing volumes, concentrate sales and cash provide a baseline for comparing subsequent updates. The next evidence of progress will come from actual underground ore delivery, plant performance and expenditure rather than from the commencement milestone alone.

FAQs

Q: How much ore was processed in the June quarter?

A:77,953 tonnes, compared with 72,351 tonnes in the preceding quarter.

Q: What was reported tungsten concentrate production?

A:21,297 metric tonne units during the June 2026 quarter.

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