The race for tin RMR v AFM17 Feb 2026 09:11
A while back I stated that RMR’s investment case boiled down to us finding a better tin grade/intercepts than Alphamin so that they would be faced with two choices: either close their mine when resources run dry or buy RMR.
I thought it would be useful to understand, particularly after yesterday, why RMR look well ahead in this race.
Alphamin,for many years (Mpama North drilling dates back to 2012–18 and initial Mpama South drilling in 2020-21) has found any concrete success beyond its existing mine footprint elusive.
Recent activity on Alphamin’s website details drilling at Mpama North and South which recommenced in Q4 2024 with further ramp-ups in 2025 (more rigs at both areas).
They planned to drill 4,500 m and actually drilled: 2,811 m — well below target due to contractor and geology issues. Alphamin’s geological issues seem concerning for them but positive for us.
Only three holes were completed post-Q3 2025 (2 at Mpama North, 1 at Mpama South). And none showed visible tin mineralisation. Alphamin has been actively drilling exploration targets for years (Mpama North back to at least 2012; ongoing Mpama South work since 2020), yet still no significant new tin resources outside the main mine have been delineated. This long period without breakthrough discovery as stated highlights severe ongoing geological challenges.
Despite increasing rigs and deploying new technology, Alphamin failed to hit its drilling metre targets in 2025 and yielded no new confirmed tin mineralisation in recent holes. This points to either ineffective targeting, or complex/poorly mineralised geology beyond the current known resources.
Either scenario suggests continuing uncertainty and potential cost inefficiency in exploration.
Rome’s drilling results from yesterday, especially with metal prices near all-time highs provide tangible catalysts for large resource upgrades, rerating potential, and future resource expansion, unlike Alphamin’s current exploration status.