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According to publicly available information, the Langer Heinrich Mine s located in Namibia, 80 kilometers east of the major seaport of Walvis Bay and about 40 kilometers south-east of the large-scale, hard-rock Rössing uranium project operated by a subsidiary of Rio Tinto plc. The mine is a surficial calcrete type uranium deposit. The project is operated by Langer Heinrich Uranium (Pty) Ltd., a company that is 75% owned by Paladin Energy Ltd. ("Paladin") and 25% owned by CNNC Overseas Uranium Holding Limited, a wholly owned subsidiary of the China National Nuclear Corporation.  

In it’s Quarterly Activities Report for the period ending September 30, 2025, Paladin reported quarterly production of 1,066,496 lb. U3O8 from the Langer Heinrich Mine and total quarterly sales of 533,789 pounds sold. The ramp-up at the mine continues according to plan with total material mined 63% higher than previous quarter.

Paladin stated updated mineral resources as at June 30, 2025, with; total Measured resources of 94.2 million pounds within 100.8 million tonnes of ore at an average grade of 425 ppm U3O8, total Indicated resources of 19.5 million pounds within 23.5 million tonnes of ore at an average grade of 375 ppm U3O8, and Inferred resources of 8.4 million pounds within 11.0 million tonnes of ore at an average grade of 345 ppm U3O8. Resources are compliant under the JORC Code (2012). A cut-off grade of 200ppm U3O8 applied to in-situ, with a cut-off grade of 250ppm U3O8 applied to stockpiles.

Unless otherwise indicated, the scientific and technical information herein regarding the Langer Heinrich Project has been derived from Paladin’s Annual Report for the year ended June 30, 2025, as well as the other public disclosures of Paladin.

Mineral Reserves – As of June 2025 (100% Basis)
Location Classification Tonnes
(Mt)		 Grade
(ppm U3O8)		 Content
(Mlbs U3O8)
In situ – Open Pit Proved 47.1 491 51.0
In situ – Open Pit Probable 9.4 421 8.8
Stockpiles Proved 23.9 336 17.7
Total All 80.4 437 77.5
Note that the estimates in the above table:
  • Ore Reserves are reported on a dry basis
  • Proved ore reserves are inclusive of ore stockpiles
  • 250 ppm cut-off applied
  • Tonnage figures have been rounded and may not add up to the totals quoted
  • The mineral reserves were estimated in accordance to JORC (2012).
Mineral Resources – As of June 30, 2025 (100% Basis)
Location Classification Tonnes
(Mt)		 Grade
(ppm U3O8)		 Content
(Mlbs U3O8)
In situ – Open Pit Measured 76.9 450 76.3
In situ – Open Pit Indicated 23.5 375 19.5
In situ – Open Pit Inferred 11.0 345 8.4
Total In Situ All 111.4 424 104.2
Medium Grade stockpiles Measured 2.6 460 2.6
Low Grade stockpiles Measured 21.3 325 15.2
Total All 135.3 409 122.0
Note that mineral resources:
  • 200 ppm U3O8 cut-off applied to in-situ Mineral Resources – 250 ppm U3O8 cut-off applied to stockpiles at the time of mining.
  • The Measured and Indicated U3O8 Mineral Resources are inclusive of those Mineral Resources modified to produce Ore Reserves
  • Depleted for Mining
  • Tonnage Information has been rounded and as a result the figures may not add up to the totals quoted
  • The mineral resources were estimated in accordance to JORC (2012).

The Langer Heinrich Royalty was created pursuant to a letter agreement dated May 31, 2002, between Paladin Resources Ltd. (now Paladin Energy Ltd.), through its subsidiary, Paladin Energy Metals Ltd. (now Paladin Energy Minerals NL) and Aztec Resources Limited. Such royalty interest was subsequently acquired by Mega Redport Pty Ltd., a wholly owned subsidiary of Mega Uranium Ltd. The Langer Royalty is a PR royalty of A$0.12 per kilogram of U3O8 produced from the Langer Heinrich Mine and sold by Paladin and Paladin Energy Metals Ltd.

In its Quarterly Activities Report for the period ending September 30, 2025, Paladin reported quarterly production of 1,066,496 lb. U3O8 from the mine and total quarterly sales of 533,789 pounds sold. The ramp-up at the mine continues according to plan with total material mined 63% higher than previous quarter.

In its Annual Report for the fiscal year ended June 30, 2025, Paladin stated that operations at the Langer Heinrich Mine ramped up steadily throughout FY2025 following commercial production recommencing in March 2024. The mine processed over 3.6M tonnes of ore during the year and production reached 3Mlb U₃O₈ for the year. The average plant recovery rate of 84% reflects the steady progress made during the year as the mine team increased its capability to optimize plant performance. Sales for the year were 2.7Mlb U₃O₈ and Paladin met all obligations under its contract book with its tier-one customers. The fourth quarter recorded the highest production levels since the restart of the mine, supported by the best crusher throughput since the plant was first constructed, consistent plant performance, and refined feed blend strategies.

In an ASX Announcement dated March 21, 2025 Paladin announced that, as a result of unseasonal heavy rains, access to the Langer Heinrich mine had been impacted and all operations had been temporarily suspended. On March 26, 2025, Paladin announced that operations had resumed at the mine following the temporary suspension. The disruption to early commencement of mining, together with the short-term impact of the suspension of operations, and the difficulties associated with processing saturated stockpiled ore, resulted in Paladin withdrawing production guidance for FY2025.

For the period ending December 31, 2024, Paladin announced their best month of production to date at the Langer Heinrich mine in December, with 308,604 lb. U3O8 produced. On July 22, 2024, Paladin announced the production at Langer Heinrich mine ramped up with 517,597 lb. of U3O8 produced to June 30, 2024. The first customer shipment, containing 319,229 lb. of U3O8, departed Namibia on July 12, 2024.

In an ASX Announcement dated November 12, 2024, Paladin announced revised guidance on production at the Langer Heinrich mine . As a result of the lower-than-expected production results for October and, noting the ongoing challenges and operational variability experienced to date in ramping up production at the mine, Paladin revised its FY2025 production guidance to 3.0 – 3.6 Mlbs. U3O8 (previously 4.0 - 4.5 Mlbs. U3O8) and withdraw all other guidance in relation to FY2025. Paladin stated that October production (186,667 lb.) was lower than planned primarily due to: 1) continued variability in the stockpiled ore processed, resulting in a lower than planned average feed grade for the month; and 2) disruptions to the supply of water from NamWater, which restricted the throughput volume of ore tonnes processed through the plant. The challenges experienced with throughput and grade variability during October were partially offset by an improvement in average recoveries for the month (approximately 87%).

The information below regarding project milestones and recent developments for the Langer Heinrich Mine has been summarized from Paladin's public disclosure and from other publicly available materials.

The Langer Heinrich Mine deposit was discovered by General Mining Union Corporation Limited ("Gencor") in 1973. Between the late 1970s and 1980, Gencor completed substantial technical work, including a full project-evaluation study, metallurgical studies, multiple exploratory shafts and construction of a 300,000 tonne per year dry screen plant and pilot plant at the Langer Heinrich Mine.  In 1998, the Langer Heinrich Mine was acquired by Acclaim Uranium, which completed additional drilling and a pre-feasibility study between 1999 and 2002.  In August 2002, Paladin acquired Langer Heinrich Uranium (Pty) Ltd. from Aztec Resources Ltd (formerly Acclaim Uranium NL).

Paladin filed a resource estimation in April of 2005, and in July of 2005, announced that the Ministry of Mines and Energy in Namibia approved the grant of a mining licence covering the Langer Heinrich deposit for a 25-year term.

Construction of the Langer Heinrich Uranium Project commenced in 2005, and staged commissioning of the plant began in August 2006. The mine was officially opened in March 2007. On May 25, 2018, Paladin announced that the Langer Heinrich Mine was to be placed on care and maintenance and stopped presenting ore to the plant because of persistently low uranium prices.

The Langer Heinrich Mine had its first full year of production in Paladin's fiscal year ended June 30, 2009. Since then, Paladin has completed two expansion projects, the first being the Stage 2 expansion in fiscal 2010 and the second being the Stage 3 expansion that took place in fiscal 2012.

In July of 2014, Paladin announced the completion of the sale of a 25% stake in the Langer Heinrich mining operations to CNNC Overseas Uranium Holding Limited. In May of 2018, Paladin announced that it has received the consent of relevant stakeholders to place the Langer Heinrich Mine on care and maintenance and that it had stopped presenting ore to the plant.

In a release dated November 4, 2021, Paladin announced an update to the Langer Heinrich Restart Plan. Paladin also disclosed an updated mineral resource and ore reserve estimates for the Langer Heinrich mine. Paladin disclosed that the update confirms a 17-year mine life supported by ore reserves of 84.8 million tonnes with an average U3O8 grade of 448 ppm. The life of mine production target increased to 77.4 million pounds of U3O8 (previously 76.1 million pounds). The estimated life of mine C1 costs have been updated to US$27.40/lb (previously US$26.90/lb), primarily due to increased estimated contract mining rates.

In an announcement dated July 19, 2022, Paladin announced that its board of directors had made the decision to return the Langer Heinrich Mine to production, with first volumes targeted for the first quarter of calendar year 2024. Paladin further stated that total project capital expenditure had increased to US$118 million on a 100% project basis, (previous guidance of US$87 million), primarily driven by recent inflationary pressures across the project supply chain, brought forward power and water infrastructure works and increased owners team costs. 

In a news release dated April 2, 2024, Paladin announced commercial production at the Langer Heinrich Mine, with the first production and drumming of uranium concentrates on March 30, 2024. Paladin indicated that their focus would now shift to ramp-up of production and building product inventory ahead of shipments to customers.

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