History
Alexco found the rich Bermingham silver deposit at Keno Hill, raised heavily to restart the mine in 2020, but could not develop it fast enough and was bought by Hecla in 2022.
2016-2017: The Bermingham discovery
The record opens with Alexco drilling at Bermingham, part of its Keno Hill silver district in the Yukon. In September 2016, interim results from 18 of 36 holes included 7.5 metres at 2,715 grams a tonne of silver, and the Bear Zone had been traced over at least 250 metres of its plunge. In December, the final 32 of 50 holes returned 7.16 metres at 4,375 g/t and 3.98 metres at 6,477 g/t. First metallurgical work indicated 94-96% silver and lead recoveries using the existing district mill flowsheet.
In January 2017 the consultant SRK more than tripled Bermingham's indicated resource, from 5.2 to 17.3 million ounces of silver, lifting the district's indicated resource 22% to 67.5 million ounces. Bermingham became the reason to restart Keno Hill.
In March 2017 Alexco renegotiated its 2008 silver stream with Silver Wheaton. The fixed US$3.90 an ounce payment became a percentage of the spot price that rises when grades or prices fall, so lower-grade ore stopped being uneconomic to mine. Silver Wheaton took 3 million Alexco shares. A new economic assessment showed an after-tax net present value of C$79.4m, a 75% return, and C$27m to build.
2017-2019: Permits, studies and a back-stop
In December 2017 Alexco received the final permit, a Water Use Licence amendment, needed for the Flame & Moth mine, expected to be the main production source at 683,000 tonnes at 666 g/t silver. Bermingham still needed an environmental assessment, with the proposal filed in November 2017. The same month Alexco agreed to sell its US environmental subsidiary group, for nominal consideration, to a company owned by James Harrington, a senior officer of its environmental arm. A special committee and the board approved it, and it was exempt from minority approval because it was under 25% of market capitalization.
In February 2018 Alexco set up a US$15m credit facility with Sprott Private Resource Lending, maturing February 2021. Management described it as a back-stop while underground development and mill refurbishment continued, not money it meant to spend. In September 2018 Bermingham's indicated resource nearly doubled to 33.3 million ounces, though the inferred grade fell 32%. District indicated resources rose 24% to 84.0 million ounces.
A pre-feasibility study in March 2019 put the after-tax net present value at C$101.3m with a 74% return at US$17.90 silver, with C$23.2m of initial capital. First deep-target results at Bermingham in September 2019 returned 8.1 metres at 1,414 g/t silver.
2020-2021: Selling the consultancy and restarting the mine
In February 2020 Alexco sold Alexco Environmental Group to its management for C$13.35m, C$12.1m in cash and a C$1.25m note. The group was why Canada picked Alexco as preferred purchaser of Keno Hill in 2006. The sale left a pure silver company.
On 24 June 2020, holding a draft renewed water use licence, Alexco took the production decision, targeting first concentrate in the fourth quarter of 2020 and signing a non-binding term sheet to amend the Wheaton stream again. A financing announced the same day at C$20m was upsized to C$26m and closed on 7 July at C$30.0m, with 10,994,000 shares at C$2.73. The final licence arrived on 27 July.
In May 2021 an updated technical report lifted the reserve 22% to 1.44 million tonnes at 804 g/t silver, or 35.5 million ounces over eight years, with a mill expansion from about 400 to 550 tonnes a day planned. It used only drilling completed before 2019. In June Alexco raised C$28.75m at C$3.50 a share, issuing 8,214,450 shares. Shares on issue rose from 119,994,664 at the end of 2019 to 151,557,545 at the end of 2021, reflecting this steady equity funding.
2022: Stalled ramp-up and sale to Hecla
In January 2022 Bermingham's indicated resource rose 43% to 47.2 million ounces at 939 g/t, and the inferred rose 70% to 19.9 million ounces. Alexco said it was re-evaluating the mine plan. In April it placed 7,473,495 shares at C$1.75 for C$13.1m, half the June 2021 price, to fund the ramp-up. It was the last money Alexco raised.
On 22 June 2022 Alexco suspended milling for five to six months to concentrate on underground development, conceding the ramp-up was well behind schedule and a sustainable 400 tonnes a day would not be reached in 2022. Cash was about C$14m against negative working capital of about C$4.5m, and more financing would be needed. Ore faces at Bermingham matched or beat modelled grades of 1,900-2,000 g/t silver. The problem was developing the mine fast enough to feed the mill.
On 5 July Hecla Mining agreed to buy Alexco for 0.116 of a Hecla share per Alexco share, about US$0.47 and a 23% premium. Hecla would fund Alexco in the interim, take a 9.9% stake, and pay Wheaton Precious Metals US$135m in stock to end the silver stream. Hecla completed the acquisition on 8 September 2022.
Written from the 23 story beats below (2016 to 8 Sept 2022), which come from the company's own announcements and filings.