Mined in Yorkshire. Bought from Japan. The Story Of Polyhalite.
It just takes Japan to show us how it’s sold.
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A pub in Yorkshire. Tuesday evening. Ten fifteen.
Low ceiling. Carpet that’s been there since the eighties and intends to stay. A fruit machine in the corner that nobody’s touched all night. The barman working his way along the same section of bar with the same cloth he’s had in his hand for twenty minutes. The place is nearly empty now — just a couple of tables still going, coats on the backs of chairs, the particular ease of people who’ve stopped being polite and started being comfortable.
Two men. Boozing buddies. See each other when they can, which isn’t as often as it used to be. A pint each. A plate on the table between them. A cheese sandwich — been on the bar since lunchtime, corners curling, marked down to half price. One of them bought it to soak up the beer. It hasn’t worked. Neither of them has touched it.
On the table, next to the sandwich, a copy of the Whitby Gazette. The Yorkshire Post is on the bar where one of them left it earlier. Both papers have covered the Woodsmith Mine. The jobs. The tunnelling record. The Mitsubishi deal made the Yorkshire Post. The Whitby Gazette has followed every development since the shafts started sinking.
Both papers have followed the story. Neither has followed it this far. Yet.
The conversation has been running a while. Nothing urgent. The kind that finds its own level.
Then, out of nowhere —
“Have you ever heard of polyhalite?”
“No. Does she work in the biscuit factory like our Gemma?”
“It’s not a person. It’s a mineral. It’s probably under your feet, actually.”
A glance down at the floor. Back up.
“How many have you had?”
“I’m being serious.”
“You what?”
“It’s a mineral. Read about it today. Fascinating stuff, actually.”
The pause of a man making his mind up.
“Reight.”
He settles back. Picks up his pint. Puts it down again without drinking. The fruit machine blinks in the corner.
“So where does it go then?”
“Far East, I suppose.”
A sip. The conversation moves on.
“Go on then.”
Polyhalite: The Mineral Beneath North Yorkshire.
Two hundred and sixty million years ago, a shallow sea sat where Yorkshire now stands. Evaporated. Completely. What it left behind — compressed into the rock over time — was a mineral containing four of the six nutrients every plant on earth needs to grow. Potassium. Sulphur. Magnesium. Calcium. All four. In a single natural crystal. No chemicals. No processing. You mine it, crush it, granulate it, spread it on a field. That’s it.
“And it’s here. Under Yorkshire.”
Only place on earth there’s any significant amount of it. The Woodsmith Mine near Whitby is being built to reach it. Two shafts going down 1,600 metres — deeper than any mine in Britain has ever gone. There’s a tunnel boring machine down there right now called Stella Rose — already cut more than 30 kilometres beneath the North York Moors. Longest tunnel of its kind ever drilled. Still going. When it’s done, a conveyor carries the stuff to Teesside and it ships out to the world.
“How much are we talking?”
Thirteen million tonnes a year at full capacity. Over a hundred years of operation. Projected contribution to the UK economy — one hundred billion pounds.
“Say that again.”
One hundred billion pounds. Under a Yorkshire field.
He picks up his pint. Takes a slow sip. Sets it down.
“Reight.”
Woodsmith Mine and the Moment Britain Blinked.
“So what’s the catch?”
That sandwich. That bread. The wheat almost certainly came from France — biggest single source of food we import into this country. That French farmer fertilised his field with polyhalite. From under the North Yorkshire coast. Nine hundred trials. Ten years. Forty-seven crops. Thirty-three countries. The science isn’t in dispute.
“So the wheat in that sandwich —”
Left Yorkshire as a mineral. Came back as the pub lunch. And it’s still sitting there.
He glances at the sandwich. The curling corners. Then back up.
“Nobody knows this.”
Nobody in Westminster appears to have noticed. And the reason comes down to 2020. Sirius Minerals — the company building Woodsmith — needed a bond deal in the City of London. Deal collapsed. Company ran out of money. Government could have acted. City could have acted.
Neither moved.
Anglo American came in and bought Sirius for considerably less than it was worth. Put in over a billion pounds since. But in 2024 they slowed everything down — cut the spending, went looking for what the press release called a syndication partner.
“What’s that?”
Someone else to share the risk. And the returns.
“And?”
Mitsubishi Corporation. February this year. Tokyo. One of the largest trading companies on earth. Agricultural networks spanning every major market. Distribution infrastructure that reaches from European grain cooperatives all the way to China. Ninety-five percent of China’s arable land.
“So Japan’s involved now.”
Britain had the mineral. Japan had the vision to see what it was worth.
He says nothing for a moment. Nods slowly. The nod of a man recalibrating.
“Sirius Minerals didn’t fail because polyhalite isn’t valuable. It failed because nobody picked up the phone. That’s it. That’s the whole story.”
POLY4 Fertiliser: Already Sold Back to British Farmers.
“It gets worse, doesn’t it.”
It gets worse.
The product — POLY4, or Polysulphate from the older Boulby Mine nearby — is already being sold to British farmers. Right now. This season. Agricultural merchants stocking it across the country. Diamond Fertilisers distributing it directly to UK growers under an active deal with Anglo American. Trials on sixty farms across the UK and Ireland. ForFarmers UK selling it now.
“Hang on. Yorkshire farmers.”
Buying back a mineral from beneath their own fields.
“Through —”
A supply chain that runs through Tokyo.
He stares at the table for a second.
“You’re not making this up.”
Every word of it’s documented. And it doesn’t stop there. Britain is the 39th largest rice exporter in the world. France, Germany, Netherlands, Ireland — all buying British rice. We don’t grow rice. Import it, repackage it, ship it back out. And we export eggs to Europe while importing twice as many back.
“The chickens —”
Go one way. The eggs come the other.
A short laugh. Not because it’s funny. Because it’s the only reasonable response.
“Britain exports what it doesn’t grow, imports what it already has, and needed a corporation in Tokyo to explain how to sell the only thing in the world that exists exclusively under British soil. You couldn’t write it. Except someone just did.”
UK Fertiliser Imports and British Food Security
“So this actually matters. It’s not just daft.”
It matters. Britain imports approximately sixty percent of the fertiliser its farmers use. Sixty percent. In 2022 that cost 2.6 billion US dollars. When Russia went into Ukraine, fertiliser supply across Europe tightened overnight. Every serious agricultural economist said the same thing — food security and fertiliser security are identical. You can’t grow food without nutrients. You can’t guarantee nutrients without producing them at home or accepting you’re entirely dependent on whoever does.
“And we’re sitting on a hundred years of the stuff.”
A hundred-year domestic solution to that dependency. And we needed Japan to show us how to sell it.
He’s quiet for a moment. Turning it over.
“There’s more, isn’t there.”
There’s more.
Norway, North Sea Gas, and the $1.9 Trillion Question.
“Go on then.”
Norway and Britain. Same North Sea. Same seabed. Same gas.
Norway said — this belongs to the Norwegian people. Every penny of surplus revenue goes into a state fund for future generations. That fund is now worth $1.9 trillion. Largest sovereign wealth fund in the world. $340,000 for every Norwegian citizen. Last year alone it made $247 billion profit.
“How much a day is that?”
$565 million. Every single day. While Norwegians sleep.
“And us?”
Privatised the industry. Spent the revenues. Been a net gas importer since 2004.
“Who’s our biggest supplier of gas right now?”
Norway. Seventy-six percent of all our imports last year.
“So they took the same gas we had —”
Saved it.
“And now —”
Sell it back to us.
“And we —”
Took it. Spent it. Pay the bill.
The Callaghan government looked at setting up a sovereign wealth fund in the 1970s. Chose short-term spending instead.
“How much would that be worth now?”
$1.9 trillion. To Norway.
He picks up his pint. Puts it back down without drinking.
“Britain had the same gas. Made a different choice. Norway earns $565 million a day from that choice. Britain pays the energy bill.”
British Industrial Decline: The Pattern Behind the Punchline.
“It’s not just the gas though, is it. It’s everything.”
Coal. Steel. Water. Energy. Rail. North Sea gas. Polyhalite.
“Every time.”
Every time. Not accidents. Not bad luck. Choices. Each one with a reason behind it. Each reason perfectly sensible on its own. Together — the most consistent industrial strategy in modern British history. The strategy of not having one.
“And polyhalite’s different because —”
It’s not declining. It’s not losing ground to something cheaper. It is a growth asset in sustainable agriculture — the sector every serious government on earth has identified as critical for the next fifty years. More food. Less land. Fewer chemicals. Lower carbon. POLY4 does all four in a single granule. And Britain has the only deposit worth having.
“And we got there first.”
And blinked.
“And now we’re the junior partner.”
No villain. No conspiracy. Just the same quiet institutional failure on the same loop since the 1970s. The unspoken assumption that someone else will probably sort it out.
“And someone did.”
Based in Tokyo.
The fruit machine flickers in the corner. Goes back to doing nothing. The barman moves to a new section of bar.
Neither of them says anything for a moment. The silence does the work.
What Yorkshire’s Polyhalite Tells Us About Britain in 2026.
They’ve gone quiet. The comfortable kind.
First polyhalite from Woodsmith in 2027 — if the investment decision gets made, the conditions are met, the arithmetic works out. At full capacity, the largest single source of mineral fertiliser in the world. Distribution network built largely by other people.
Over a thousand jobs. Seventy-six percent local.
A Japanese corporation in Tokyo holding the strategic key.
And somewhere above the seam — above Stella Rose still moving through the dark beneath the moors — a Yorkshire farmer is spreading Polysulphate on his field before lunch. A mineral from a thousand metres beneath his feet. Sold back through a supply chain that starts in the Marunouchi district of Tokyo. He doesn’t know where it came from.
He’s been farming this land for thirty years. His father farmed it before him. Neither of them ever wondered what was underneath.
Why would they? Nobody told them.
And nobody is going to. Because the people who should have acted in 2020 have moved on. The asset is in other hands. The returns will flow accordingly. And the question of what Britain does next with the only world-exclusive mineral deposit it has ever sat on will be answered, quietly, in Tokyo.
Last orders are called. The barman starts collecting glasses from the empty tables. The Whitby Gazette is still on the table. The Yorkshire Post is still on the bar. The sandwich plate is still there. The pints are nearly done.
Not that either of them is thinking about where the hops came from.
Far East. As it turns out.
“So we mine a product that’s exclusively ours. Britain’s.”
“Yes.”
“Then we send it to Japan, who sell it back to us.”
“Yes.”
“Presumably for a profit.”
“Yes.”
“Oh.”
A long pause. He looks at what’s left of his pint.
“Same again?”
Sources.
World Bank Trade Data — UK Food Product Imports by Country 2023. France is the UK’s single largest food import source. https://wits.worldbank.org/CountryProfile/en/Country/GBR/Year/LTST/TradeFlow/Import/Partner/by-country/Product/16-24_FoodProd
Israel Agricultural Technology Hub — Polysulphate field trials in France: winter wheat yield surplus at multiple locations; potato yield increase of 7 t/ha. https://israelagri.com/introducing-the-new-polysulphate-fertilizer/
Wikipedia — Woodsmith Mine. Location, depth, projected output, economic contribution, lifespan. https://en.wikipedia.org/wiki/Woodsmith_Mine
Tunnels and Tunnelling — Woodsmith tunnel passes 30km, December 2025. Stella Rose world record. https://www.tunnelsandtunnelling.com/news/woodsmith-mine-tunnel-passes-30km/
Engineering and Mining Journal — Conveyor tunnel over 80% complete, December 2025. 13Mt/y target. https://www.e-mj.com/breaking-news/woodsmith-polyhalite-project-conveyor-tunnel-over-80-complete/
Agronomy Journal, American Society of Agronomy — 921 trials, 47 crops, 33 countries. POLY4 yield uplift 3-5%. Via Anglo American: https://uk.angloamerican.com/our-fertiliser/insights/polyhalite-yield-summary
Business Link Magazine — Mitsubishi investment, February 2026. https://www.blmforum.net/mag/mitsubishi-backs-continued-development-of-woodsmith-fertiliser-project/
World Fertilizer — Mitsubishi agreement, February 2026. https://www.worldfertilizer.com/project-news/23022026/woodsmith-project-set-to-benefit-from-investment-agreement-with-mitsubishi/
Mitsubishi Corporation — Official press release, February 2026. https://www.mitsubishicorp.com/jp/en/news/release/2026/20260220001.html
GlobalData — Mitsubishi HQ: Marunouchi, Chiyoda-ku, Tokyo, Japan. https://www.globaldata.com/company-profile/mitsubishi-corp/
Farmers Weekly — UK imports approximately 60% of fertiliser. https://www.fwi.co.uk/business/markets-and-trends/input-prices/fertiliser-markets-steady-with-uk-reliant-on-imports
Statista — UK fertiliser imports 2022: $2.6 billion. https://www.statista.com/statistics/503075/total-import-value-of-fertilizers-to-the-united-kingdom-uk/
Thomas Bell / Diamond Fertilisers — POLY4 distribution partnership with Anglo American. https://www.thomas-bell.co.uk/poly4
Anglo American — Cefetra: 60 UK and Ireland farm trials, exclusive European distribution via BayWa. https://www.angloamerican.com/our-stories/environment/crop-nutrients-sowing-the-seeds-of-future
ForFarmers UK — TopFert polysulphate range available to British farmers. https://www.forfarmers.co.uk/dairy/forage/forage-products/fertiliser
SSOIF — UK is 39th largest rice exporter. Top markets: France, Netherlands, Ireland, Germany, Belgium. Britain does not grow rice. https://ssoif.co.uk/what-food-does-the-uk-export/
Euromeatnews / NFU — Britain imports twice as many eggs as its own production while simultaneously exporting eggs. https://www.euromeatnews.com/Article-New-research-shows-love-affair-between-British-eggs-and-locals/1745
Wikipedia — Norway Government Pension Fund Global: $1.9 trillion as of June 2025. $340,000 per Norwegian citizen. https://en.wikipedia.org/wiki/Government_Pension_Fund_of_Norway
CNBC — Norway sovereign wealth fund made $247 billion profit in 2025. https://www.cnbc.com/2026/01/29/norway-sovereign-wealth-fund-2025-return-nbim-trillion-oil-stocks-tech-ai-banks-silver.html
Heatable — Norway accounts for 76% of all UK gas imports in 2024. https://heatable.co.uk/boiler-advice/where-does-the-UK-get-its-gas-from
The Boar — Callaghan government rejected a UK sovereign wealth fund in the 1970s, choosing short-term spending instead. https://theboar.org/2025/04/the-success-of-norways-investment-fund/
ICL UK — Polysulphate sold in 22 countries across five continents from Boulby, North Yorkshire. https://www.icl-uk.uk/product/polysulphate/
Proactive Investors — Anglo acquired Sirius Minerals 2020; over £1.1 billion invested since. https://www.proactiveinvestors.co.uk/companies/news/1078102
New Civil Engineer — Anglo cuts Woodsmith capex after failed BHP bid, December 2025. https://www.newcivilengineer.com/latest/record-breaking-woodsmith-mine-tunnel-bore-passes-30km-mark-19-12-2025/
Whitby Gazette — local coverage of Woodsmith Mine development, jobs and tunnelling progress. https://www.whitbygazette.co.uk
Yorkshire Post — Mitsubishi Corporation investment in Woodsmith Mine near Whitby, February 2026. https://www.yorkshirepost.co.uk/topic/whitby
The Almighty Gob is a Bristol-based publication covering UK institutional failure, political accountability, and the gap between what is said and what is done. Built from primary sources, company announcements, field trial data, and publicly available trade statistics. All facts are citable. All ironies are real.
Sources.
World Bank Trade Data — UK Food Product Imports by Country 2023. France is the UK’s single largest food import source. https://wits.worldbank.org/CountryProfile/en/Country/GBR/Year/LTST/TradeFlow/Import/Partner/by-country/Product/16-24_FoodProd
Israel Agricultural Technology Hub — Polysulphate field trials in France: winter wheat yield surplus at multiple locations; potato yield increase of 7 t/ha. https://israelagri.com/introducing-the-new-polysulphate-fertilizer/
Wikipedia — Woodsmith Mine. Location, depth, projected output, economic contribution, lifespan. https://en.wikipedia.org/wiki/Woodsmith_Mine
Tunnels and Tunnelling — Woodsmith tunnel passes 30km, December 2025. Stella Rose world record. https://www.tunnelsandtunnelling.com/news/woodsmith-mine-tunnel-passes-30km/
Engineering and Mining Journal — Conveyor tunnel over 80% complete, December 2025. 13Mt/y target. https://www.e-mj.com/breaking-news/woodsmith-polyhalite-project-conveyor-tunnel-over-80-complete/
Agronomy Journal, American Society of Agronomy — 921 trials, 47 crops, 33 countries. POLY4 yield uplift 3-5%. Via Anglo American: https://uk.angloamerican.com/our-fertiliser/insights/polyhalite-yield-summary
Business Link Magazine — Mitsubishi investment, February 2026. https://www.blmforum.net/mag/mitsubishi-backs-continued-development-of-woodsmith-fertiliser-project/
World Fertilizer — Mitsubishi agreement, February 2026. https://www.worldfertilizer.com/project-news/23022026/woodsmith-project-set-to-benefit-from-investment-agreement-with-mitsubishi/
Mitsubishi Corporation — Official press release, February 2026. https://www.mitsubishicorp.com/jp/en/news/release/2026/20260220001.html
GlobalData — Mitsubishi HQ: Marunouchi, Chiyoda-ku, Tokyo, Japan. https://www.globaldata.com/company-profile/mitsubishi-corp/
Farmers Weekly — UK imports approximately 60% of fertiliser. https://www.fwi.co.uk/business/markets-and-trends/input-prices/fertiliser-markets-steady-with-uk-reliant-on-imports
Statista — UK fertiliser imports 2022: $2.6 billion. https://www.statista.com/statistics/503075/total-import-value-of-fertilizers-to-the-united-kingdom-uk/
Thomas Bell / Diamond Fertilisers — POLY4 distribution partnership with Anglo American. https://www.thomas-bell.co.uk/poly4
Anglo American — Cefetra: 60 UK and Ireland farm trials, exclusive European distribution via BayWa. https://www.angloamerican.com/our-stories/environment/crop-nutrients-sowing-the-seeds-of-future
ForFarmers UK — TopFert polysulphate range available to British farmers. https://www.forfarmers.co.uk/dairy/forage/forage-products/fertiliser
SSOIF — UK is 39th largest rice exporter. Top markets: France, Netherlands, Ireland, Germany, Belgium. Britain does not grow rice. https://ssoif.co.uk/what-food-does-the-uk-export/
Euromeatnews / NFU — Britain imports twice as many eggs as its own production while simultaneously exporting eggs. https://www.euromeatnews.com/Article-New-research-shows-love-affair-between-British-eggs-and-locals/1745
Wikipedia — Norway Government Pension Fund Global: $1.9 trillion as of June 2025. $340,000 per Norwegian citizen. https://en.wikipedia.org/wiki/Government_Pension_Fund_of_Norway
CNBC — Norway sovereign wealth fund made $247 billion profit in 2025. https://www.cnbc.com/2026/01/29/norway-sovereign-wealth-fund-2025-return-nbim-trillion-oil-stocks-tech-ai-banks-silver.html
Heatable — Norway accounts for 76% of all UK gas imports in 2024. https://heatable.co.uk/boiler-advice/where-does-the-UK-get-its-gas-from
The Boar — Callaghan government rejected a UK sovereign wealth fund in the 1970s, choosing short-term spending instead. https://theboar.org/2025/04/the-success-of-norways-investment-fund/
ICL UK — Polysulphate sold in 22 countries across five continents from Boulby, North Yorkshire. https://www.icl-uk.uk/product/polysulphate/
Proactive Investors — Anglo acquired Sirius Minerals 2020; over £1.1 billion invested since. https://www.proactiveinvestors.co.uk/companies/news/1078102
New Civil Engineer — Anglo cuts Woodsmith capex after failed BHP bid, December 2025. https://www.newcivilengineer.com/latest/record-breaking-woodsmith-mine-tunnel-bore-passes-30km-mark-19-12-2025/
The Almighty Gob is a Bristol-based publication covering UK institutional failure, political accountability, and the gap between what is said and what is done. Built from primary sources, company announcements, field trial data, and publicly available trade statistics. All facts are citable. All ironies are real.
Absolutely brilliant John 👌 good read 👍