The Lapsed Provisional

1878–1879Six Months of Protection

A provisional patent in 1878 buys six months. Within them the applicant must file a complete specification and pay its fees. If he does not, the protection lapses, and what he described belongs to whoever can make it work. Sidney Gilchrist Thomas, a clerk at a London police court who studies chemistry in the evenings, lodged his provisional in November 1877 in his own name alone. The clock runs to May.

What he has described is simple to state. The Bessemer converter makes cheap steel by blowing air through molten pig iron, but its lining is acid, made of silica, and any phosphorus in the iron goes back into the metal and makes it brittle. A lime flux would hold the phosphorus in the slag, but lime eats an acid lining. Line the vessel with a basic material instead and the chemistry turns in the ironmaster's favour. The difficulty is that no basic lining yet survives more than a few blows. George Snelus patented the idea in 1872 and cleaned 3–4 ton charges in a vessel lined with overburnt lime. He never built a lining that lasted.

The prize is geological. Bessemer steel runs on low-phosphorus haematite, which is scarce and dear. The cheap ores lie elsewhere. One is the ironstone of Cleveland, on which Teesside has built some hundred blast furnaces. Another is the minette of Lorraine and Luxembourg, roughly a third iron and up to two per cent phosphorus, which makes a fluid pig iron good for castings and useless for steel. Since the peace of 1871 that basin has been cut three ways, and the German share sits in the annexed Moselle.

In March 1878 Thomas tells the Iron and Steel Institute that he has dephosphorised iron in the converter. The Institute holds its two general meetings in May in London and in the autumn elsewhere, so a March meeting is an ordinary London sitting, and the members let an amateur's claim pass. It goes on the record. That is enough to make the principle public, and not enough to make anyone try it.

Thomas dies in London in the first days of April, a fortnight short of his twenty-eighth birthday, of the illness he has carried for years. The trials at Blaenavon, run at weekends by his cousin Percy Gilchrist, chemist at a Welsh ironworks near insolvency, stand about five weeks short of the provisional's expiry. The notebooks and the filing pass to the family's executors. They are asked for completion fees on an unproven invention by a dead clerk, and they decline. Gilchrist's name is not on the provisional, so he has no standing to complete it. May comes, and the protection lapses.

The board of the Blaenavon company meets in July, in a room above the works offices. It is late afternoon. Rain comes off the hill onto the slates, and through the window the furnace bell marks a cast. On the table lies a piece of the trial lining, grey and crumbled at one edge, brought up to show what the weekends produced. The manager had promised Thomas furnace time and help with the patent, but he made that promise to a man, and the man is dead. The directors have creditors to answer and a Welsh iron trade losing to foreign competition year by year. They withdraw furnace access from the experiment and forbid the company's chemist to spend company time on it. The piece of lining goes back downstairs with the papers. Gilchrist hears the minute read to him the next morning.

Snelus's patent comes up for its seventh-year renewal in 1879. Paying the duty keeps a claim on a process nobody has made work, and two things make it worth paying. The Paris Exhibition of 1878 has given him a gold medal for his dephosphorisation chemistry, and there is a buyer. The founding chairman of Bolckow, Vaughan died in June 1878, and his nephew Carl Bolckow now runs a firm registered in the 1860s with £2,500,000, the largest company formed to that date. It employs nine thousand men on an ore base of phosphoric Cleveland stone that the rise of steel threatens to make worthless. It has made Bessemer steel on Teesside since 1875, fed on haematite. Carl Bolckow wants a hedge. Snelus pays the duty, and Bolckow, Vaughan takes the exclusive British licence.

The trials go to the firm's general manager, Edward Windsor Richards, who had planned a Bessemer department in Wales before he came north.

1879–1897The German Process

A miner at Esch, thirty in 1879, has dug minette since he was fourteen and now digs it three days in six. His ore goes to furnaces that make foundry pig and nothing else. Luxembourg sits inside the German customs union, and the iron tariff the Reich adopts in July 1879, for reasons of its own, shields that pig from British imports without making it any better. The furnaces stay lit. The pit works short time.

In the Reichstag the annexed province becomes a line in the budget. Deputies ask what the Reich is paying to garrison and administer a territory whose famous ore yields the cheapest metal in Europe. A geologist on the 1871 boundary commission had argued that the line should take in the minette. Whether his argument moved anyone has never been settled, but from 1879 the opposition repeats it as a joke. The government answers with the fortress at Metz, and the answer holds.

On Teesside Richards runs blow after blow under the Snelus licence. The phosphorus comes out. The lime linings fail within a handful of charges, and relining costs more than the steel can carry. Bessemer output continues on haematite, and the haematite comes from Bilbao, where in 1882 the ore trade loads more ships than ever before, on British capital and the labour of migrants from the Spanish interior. That summer the Esch miner's pit stands idle. His younger brother leaves for the American Midwest, one of the thousands who go between 1879 and 1884 and fill the Luxembourgish parishes there. In the Cleveland ironstone villages the pits go on short time, and the firm's accounts show the strain of licence fees, cold furnaces and imported ore.

A British licence binds nobody on the continent. At Hörde, in the Ruhr, and in works across Luxembourg and the annexed province, teams with no patent to wait for and every reason to hurry run their own lining trials, and most of them fail. The Hörde company bets on its own men. Between 1880 and 1883 it buys majority stakes, at depression prices, in Luxembourg works, including the new site at Dudelange, and in minette concessions on the German side.

Around 1883 the Hörde chemists solve it: a lining of burnt dolomite bonded with tar, lime added early in the blow, and an after-blow to finish off the phosphorus. They patent lining and routine under the Reich law of 1877, for fifteen years, and file in France, Belgium, Luxembourg, Britain and the United States. In German it is the Hörder Verfahren, the Hörde method. English ironmasters call it the Hörde process, and the ones who resent it call it the German process.

From 1884 the minette is worth digging. The Esch miner goes back to full shifts under managers sent from the Ruhr, beside men recruited from the Rhineland. Nobody in the Reichstag tells the joke about the geologist any more.

The licences follow the frontier. Works inside the Hörde group and in the annexed province pay little. French works across the border in Meurthe-et-Moselle, and Belgian ones, pay heavy royalties and accept limits on export, terms that harden after the arrest of a French police official on the frontier in 1887. The old Lorraine ironmaking family whose plants lie on both sides of the line is licensed at one and refused at the other. French engineers spend the early 1890s on magnesite linings that avoid the patent and partly work. Deep prospecting of the Briey field waits.

Phosphorus taken out of steel goes into the slag, and ground slag is fertiliser. The Hörde group sells it to German farms and to British ones. French agriculture buys rock phosphate abroad, and the Tunisian deposits are opened in the 1890s on that demand. In the United States the basic process arrives under Hörde licence, and in Alabama the furnaces stay longer on foundry pig made from phosphoric southern ore. Much of that ore is dug by convicts whom the state leases to the mines, most of them Black men arrested under laws written to keep the leases full. Every year the trade lasts is a year more of men working, and dying, under the lease.

Bolckow, Vaughan settles in 1885. It trades its Snelus rights for access to the Hörde lining, and Teesside's first commercial basic steel runs under German licence. Snelus's own term ends in 1886. Every basic works in Britain pays royalties to the Ruhr until the British patent expires around 1897, and when the Made in Germany scare breaks in 1896, the royalties are its favourite exhibit. At the Institute, Snelus's partisans argue his priority. A smaller party argues for the dead clerk, whose lapsed provisional they cannot use and will not let go. German steel output passes Britain's around 1897. The clerk's partisans like to recall what his chemistry teacher told the evening class, years before any of it: "the man who eliminated phosphorus in the Bessemer converter would make his fortune."

1898–1921Briey in a Hurry

Briey, on the French side of the minette basin, sinks its shafts in the year the German patent lapses. From 1898 any works in Meurthe-et-Moselle can line a converter with tar and dolomite without paying the Ruhr, and every one of them wants ore at once. Concessions that would have been proved over twenty years are sunk in five. The labour comes from Italy.

A woman of twenty-two from the Italian north keeps house for her husband and four lodgers in a cité, a company row of two-room houses at the edge of the field, built in a single winter. At six on a January morning in 1906 she stands in the queue at the row's one standpipe with two zinc buckets, while the night shift walks past in the dark from the pithead. A notice nailed to the post above the tap, in French she cannot yet read, says the water must be boiled. Typhoid has come through the cités every winter since they went up, in rooms built faster than their drains, and the company doctor keeps the count. She boils the water. Two of the lodgers are sick by February.

The census of 1910 draws the line the patent drew. On the German side, the furnace towns of the Moselle are full of Reich Germans, managers and skilled men who came west with the boom of the 1880s. On the French side the new towns speak Italian at the pithead. By 1913 Briey produces a fraction of what an earlier start would have given it, and France enters the decade with a thinner steel base than its generals assume. In Britain the tariff reformers of 1903 hold up the Hörde royalties as proof of German method, and the elections of the decade go no differently.

The war of 1914 comes for its own reasons: the alliance blocs, the Balkans, the mobilisation timetables. None of them runs through a converter lining. German troops take the Longwy–Briey basin in the first weeks and find less in it to take. War-aims memoranda in the Reich claim the field as Hörde country. France's shell steel leans earlier and harder on British and American imports. The woman stays behind the German lines with three children while her husband serves in the Italian army; the mine works for the occupier at half strength. The war ends as it ends.

The Moselle returns to France. The expulsions of Germans who came from east of the old border are larger than they would have been, because the boom of 1884 to 1914 was run by them, and the trains out of Metz carry engineers and their families back to the Ruhr. In Luxembourg the works at Esch and Dudelange are subsidiaries of German companies, so Allied sequestration takes most of the country's steel and sells it to French groups. The referendum of September 1919 keeps the grand-ducal dynasty and prefers economic union with France. The new French owners want their works inside the French tariff, and Paris agrees: a customs and monetary union in 1920–21, with the French franc in Luxembourg shops. Belgium, which had wanted the duchy in its own orbit, is cooler toward Paris for the rest of the decade.

In the Briey cité the woman's husband comes home in 1919 and goes down the same shaft.

1926–1973The Seat on the Meuse

A clerk in the sales office at the Esch works, in the autumn of 1926, enters the plant's tonnage for the new European steel cartel in a column headed France. Luxembourg's quota is counted inside the French one. The Depression arrives on its real schedule and empties the order book.

German troops occupy the duchy in May 1940. It is annexed in 1942, its young men are conscripted into the German army, and the country answers with the general strike of that year; none of this depends on who owned the furnaces. What changes is how the furnaces are taken. The works have been French property since 1919, so they are seized outright as enemy assets, and German managers come back to Esch and Dudelange. Older men in the canteens say the Ruhr has returned. Liberation comes in 1944, and the Ardennes winter after it. Luxembourg goes back into the French union. The customs convention signed in London in 1944 binds only Belgium and the Netherlands. French exchange controls bind every bank in the duchy, and foreign money finds no reason to come.

The six states that sign the Treaty of Paris in 1951 include a sovereign Luxembourg, and the bargain at its centre, French and German coal and steel under one authority, is the bargain of the record. The seat goes elsewhere. A duchy that shares France's money and customs is no neutral ground to the Germans or the Dutch, and Belgium's candidate wins.

At half past seven on an October morning in 1952, a porter carries typewriters up the stairs of a former insurance building on the quay at Liège. Some have French keyboards and some German, and he sets the German ones on the left because nobody has told him otherwise. Barges sound on the Meuse below. Upstream the steel valley's furnaces show through the haze, and the first interpreters of the new High Authority, the body that will run the coal and steel market, stand in the hall with their coats on, waiting for the heating.

The Treaty of Rome follows in 1957, with the same six. The merger of 1965 settles the map in Belgium's favour. Brussels takes the Commission and the Council; Liège keeps the Court of Justice and receives the European Investment Bank and the Parliament's secretariat. The plenaries stay in Strasbourg. Liège fills with translators and lawyers, and its steel valley declines more slowly than it would have. In Luxembourg the Kirchberg plateau stays farmland.

Oxygen steelmaking displaces the basic converter through the 1960s, and cheap high-grade ore from overseas displaces minette and ironstone alike. The last Cleveland ironstone mine closes in 1964.

1974–2026Decided in Paris

The Esch miner's grandson, a furnace keeper at Belval, is thirty-seven when the oil shock of 1974 cuts the orders. The crisis has its own causes: oil, global overcapacity, ore from overseas. What the bend decides is where it is managed. The Minett works, the furnace belt of southern Luxembourg, are counted inside France's plans, inside France's share of the Community's crisis quotas of 1980, and inside the state groups Paris nationalises in 1981–82. There is no tripartite table in Luxembourg where unions, owners and government settle wages and retirements. Those are set in French ministries.

When the riots at Longwy break out in 1979, they spill across the border into Esch. The furnace keeper takes early retirement in 1984, at forty-seven, under a settlement his union never voted on. His son goes to Metz and his daughter to Paris, and the duchy's population stops growing.

In the cité at the edge of the Briey field, where the mines close with the rest of Lorraine's in 1997, the Italian rows have become the centre of a large Franco-Italian community, and the standpipe is long gone.

The 1985 accord to abolish frontier checks keeps its content and its parties. Belgium and the Netherlands hold their customs union alone, Luxembourg has no presidency to host a signing, and the pact takes the name of a town in the Low Countries. Schengen remains a wine village on the Moselle. Maastricht in 1992 is a Dutch presidency matter and runs as recorded. French exchange controls end in 1989–90. By then the fund passport the Community created in 1985 has found its homes, chiefly in Dublin. A few private banks in Luxembourg keep accounts for old French and Belgian families.

The duchy adopts the euro alongside France in 1999, and in 2002 it swaps the French franc it has used since 1921 for coins bearing the Grand Duke's profile. The crash of 2008 and the euro crisis come from American mortgages and peripheral debt. A country with almost no finance loses little in either and has no surplus to spend on its rust belt. The leak of tax rulings in 2014 has nothing to expose in Luxembourg, and the decade's corporate-tax scandals centre on Dublin and the Netherlands.

The steel consolidation of 2002 is headquartered in Paris, and its later foreign takeover is a matter of company ownership. Teesside's last blast furnace closes in 2015. Teesside votes Leave in 2016. The pandemic follows, then the energy shock of 2022. Port Talbot's blast furnaces end in 2024, and the government takes control of British Steel at Scunthorpe in 2025. The definitive phase of the European carbon border levy begins in January 2026, and the last Lorraine finishing mills report that Indian slab is cheaper even with the charge. The Teesside regional news calls the British Steel rescue the end of a story that began under German licence. At Blaenavon a glass case holds Percy Gilchrist's notebooks beside the provisional of November 1877.

The museum boards at Belval say the works were owned first from the Ruhr and then from Paris. This spring the Esch pensioners' union petitions a Paris ministry, again, over the 1984 retirement settlement. The furnace keeper is eighty-nine, and he signs it.