Mining news roundup for Aug. 21, 2026: Publicly traded resource companies reported a first uranium shipment from a Wyoming operation, new copper-gold-silver drilling, high-grade gold assays, antimony-gold results, silver exploration progress and an operating-status update at a Mexican silver mine.
Uranium: Ur-Energy ships first material from Shirley Basin
Ur-Energy (NYSE American: URG; TSX: URE) said it made the first shipment of uranium from its Shirley Basin mine in Wyoming to its Lost Creek processing plant on Aug. 19. The Aug. 20 announcement described Shirley Basin as entering full operations and beginning a production ramp-up; initial mining began in April and the company received final Wyoming regulatory authorization for full operations in late June. Ur-Energy said Shirley Basin has licensed wellfield and toll-processing capacity of up to 2.0 million pounds of U3O8 equivalent, while the Lost Creek–Shirley Basin system has combined annual licensed production and toll-processing capacity of 4.2 million pounds. The company’s forward-looking statements include risks around production rates, approvals, costs and development timing. Read Ur-Energy’s release.
Copper: Selkirk reports new Minto drilling results
Selkirk Copper Mines (TSXV: SCMI; FSE: IO20; OTCQX: SKRKF) reported additional Phase 2 drill results from the Minto Project in Yukon. Highlights included 1.93 metres grading 6.01% copper, 8.77 g/t gold and 36.6 g/t silver, or 13.12% copper equivalent, in hole 26SCM190 at Minto North; 3.7 metres grading 3.43% copper, 0.36 g/t gold and 47.0 g/t silver, or 3.87% copper equivalent, in hole 26SCM205; and 6.0 metres grading 3.39% copper, 0.61 g/t gold and 16.5 g/t silver, or 3.73% copper equivalent, in hole 26SCM188 at Area 118. As of Aug. 18, 45,299 metres in 187 holes had been completed against the 50,000-metre Phase 2 plan. The company said primary intervals are core lengths, with true widths estimated at about 90%; copper-equivalent figures use company-stated metal-price and recovery assumptions, and the PEA remains in progress. Read Selkirk Copper’s release.
Gold: Lion One reports high-grade drilling near Tuvatu development
Lion One Metals (TSXV: LIO; OTCQX: LOMLF) reported results from 3,337.30 metres of underground infill and grade-control drilling at its 100%-owned Tuvatu Alkaline Gold Project in Fiji. The company highlighted 4.2 metres grading 715.15 g/t gold in hole TGC-0650, including 0.45 metres at 6,571.20 g/t gold, as well as other high-grade intervals from Zone 2’s Ura and Murau lode systems. The company said 14 of 18 drill holes intersected high-grade mineralization and that the results are outside the current resource in an area near underground development. Intercepts are downhole lengths, true widths are not yet known, and the release says the drilling was intended to improve resource confidence and support potential mine-plan updates. Read Lion One’s release.
Gold exploration: Blue Star expands testing at Nutaaq
Blue Star Gold (TSXV: BAU; OTCQB: BAUFF; FSE: 5WP0) reported initial Phase 2 drilling results from the North Nutaaq target on its Ulu property in Nunavut. All five initial holes intersected the targeted structures; hole 26UND003 returned 8.0 metres at 2.56 g/t gold, including 1.5 metres at 7.41 g/t, plus a separate 1.2-metre interval at 8.66 g/t. Hole 26UND004 returned 3.4 metres at 2.70 g/t. The company said follow-up and infill drilling is warranted to test grade continuity and vector toward higher-grade zones, while results from hole 26UND005 were lower and narrower than anticipated despite strong alteration and veining. Reported intervals are downhole lengths and true thicknesses have not been established. Read Blue Star Gold’s release.
Antimony and gold: Critical One extends Howells Lake mineralization
Critical One Energy (CSE: CRTL; OTCQB: MMTLF; FSE: 4EF) reported additional assays from the Howells Lake Antimony-Gold Project in northwestern Ontario. Hole HWL-2026-016 returned 31.5 metres grading 4.9% antimony, including 4.0 metres at 21.2%, and a separate 13.9-metre interval grading 6.6% antimony, including 1.0 metre at 36.9%. The same hole also returned 17.0 metres at 1.3 g/t gold, including 3.0 metres at 2.0 g/t, while hole HWL-2026-011 returned 12.0 metres at 1.3 g/t gold, including 1.0 metre at 9.1 g/t. The company said the antimony structure remains open for follow-up drilling, but the project is still in exploration: core lengths were reported, true widths have not been estimated, and a current mineral resource has not been defined in the release. Read Critical One’s release.
Silver: Kingsmen extends Las Coloradas zone in Mexico
Kingsmen Resources (TSXV: KNG; OTCQB: KNGRF; FSE: TUY) reported results from two step-out holes at its 100%-held Las Coloradas silver project in Chihuahua, Mexico. Hole LC-26-014 returned 1.40 metres grading 433 g/t silver equivalent, including 239 g/t silver, while hole LC-26-015 returned 1.70 metres grading 185 g/t silver equivalent, including 139 g/t silver. Kingsmen said the Mine zone has now been intersected across at least 106 metres of strike and to a vertical depth of 155 metres, with mineralization open at depth and along strike. The reported widths are drilled core lengths, and true widths have not yet been determined. Read Kingsmen’s release.
Operations: Endeavour says Terronera suspension continues
Endeavour Silver (NYSE: EXK; TSX: EDR) said there had been no material change in the status of operations at its Terronera mine in Jalisco, Mexico. In its Aug. 20 update, the company said operations remained temporarily suspended after a blockade by members of a nearby Ejido community and that discussions with community representatives were ongoing. Endeavour said negotiations continued in a cordial and respectful manner and that it remained focused on reaching a resolution that would support an orderly resumption of full operations. Read Endeavour Silver’s update.
Closing note: Today’s reports span uranium production ramp-up, exploration drilling, critical-mineral assays and a mine-level operating disruption. Drill results are preliminary exploration data unless stated otherwise, and project economics, permitting, financing, technical studies and execution remain important considerations.
This article is for informational purposes only and is not financial advice.
