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# The Metal Whose Supply Is Set by Permission
- URL: https://the-capital-memo.ghost.io/the-metal-whose-supply-is-set-by-permission/
- Published: 2026-09-27T11:40:05.000Z
- Updated: 2026-09-27T11:40:05.000Z
- Author: James Coleman

Tin settled at 53,745 dollars a tonne on the London Metal Exchange this week, having started the year at 42,050 and set a record of 54,760 in January. Exchange stocks stand at 4,645 tonnes, down about fourteen percent since the first of January. Against annual world mine production of roughly 290,000 tonnes, the visible inventory on the world's benchmark exchange amounts to under six days of supply.  
  
What makes tin worth a letter of its own is not the price. It is who sets it. Two of the three swing sources of world supply are controlled by authorities that are not commercial actors and do not respond to price in the way a mining company does. Man Maw, in the Wa administered territory of Myanmar, was shut by the United Wa State Army in August 2023 and has only now begun to restart, with output recovered to something like forty or fifty percent of pre suspension levels and the shafts still being dewatered. Indonesia, the world's second largest miner, raised mine output from 55,000 tonnes in 2024 to 61,000 in 2025 while cutting refined exports by roughly a third year on year, because the constraint sits in the export licensing office rather than in the ground.

### The Historical Echo

Tin is the one industrial metal whose price was openly administered and whose administration visibly failed, which makes the failure worth studying rather than merely noting.  
  
The International Tin Council, twenty two member nations, defended a floor price through a buffer stock. On the twenty fourth of October 1985 the buffer stock manager ran out of money. The London Metal Exchange suspended tin trading the same day and the price fell overnight from 5.43 dollars a pound to 4.50, against 8.50 five years earlier. By the fourth of November it had dropped a further 400 dollars a tonne in under twenty four hours, broker losses were put at around two hundred million pounds, and the hundred year old exchange itself was thought to be at risk. The tin market stayed shut until the eleventh.  
  
What broke the Council was not speculation. It was tonnage it did not control. Brazilian production expanded outside the agreement, and at the same time aluminium and plastics were quietly displacing tinplate in packaging. The administrator had authority over its members and none at all over the parts of the world that mattered.  
  
The parallel to today is the chokepoint rather than the cartel, and it runs in the opposite direction. The floor under tin is now enforced by an armed administration in the Wa hills and by a licensing bureaucracy in Jakarta, neither of which has any obligation to sell. In 1985 the price collapsed when uncontrolled tonnage arrived. Chinese imports of Myanmar tin ore in the first half of this year already exceeded the whole of 2025, at close to 40,000 tonnes. That is precisely the shape of what arrived in 1985, and it is arriving against 4,645 tonnes of visible stock.

### Where Patient Capital Is Positioning

The rest of the supply map is doing what the price would suggest. Alphamin's Bisie mine in the Democratic Republic of the Congo, suspended in March last year when fighting approached and restarted within weeks, produced 18,576 tonnes in 2025 and guides to about 20,000 this year, selling in the second quarter at close to 52,000 dollars a tonne. China refines roughly half the world's metal and imports most of the concentrate it needs from exactly the two places described above.  
  
Solder accounts for around half of global consumption, which makes tin a direct claim on every circuit board manufactured, and the expansion of computing hardware is visible in Chinese integrated circuit output.  
  
The observation for long horizon capital is about the kind of constraint, not the size of it. A geological constraint cannot be reversed. An ounce of gold that was never found stays unfound whatever anyone decides, which is why this letter keeps returning to it. A political constraint can be lifted by a signature, and when it is lifted the tonnage does not arrive gradually. It arrives as fast as the trucks can move.  
  
That is not an argument against owning the industrial metals, which have their place. It is an argument for knowing which sort of scarcity you have bought. Tin at a record price with six days of visible stock looks exactly like an acute physical shortage. Some of it is. A meaningful part of it is a decision that two authorities took, which either of them can take back.

![](https://storage.ghost.io/c/44/88/44885750-7681-4d57-825f-5d69f4c60045/content/images/2026/09/the-metal-whose-supply-is-set-by-permission-photorealistic.jpg)

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