The Pakistani scientist Abdul Qadeer Khan has been demonized in the West for selling atomic secrets and equipment around the world, but the trade began in Europe, not Islamabad, according to court documents and experts who monitor proliferation.
The records show that industry scientists and Western intelligence agencies have known for decades that nuclear technology was pouring out of Europe despite national export control efforts to contain it.
Many of the names that have turned up among lists of suppliers and middlemen who fed equipment, materials and knowledge to nuclear programs in Pakistan and other aspiring nuclear nations are well-known players in Europe's uranium enrichment industry, a critical part of many nuclear weapons programs. Some have been convicted of illegal exports before.
The proliferation has its roots in Europe's own postwar eagerness for nuclear independence from the US and its lax security over potentially lethal technology. It was abetted, critics say, by competition within Europe for lucrative contracts to bolster state-supported nuclear industries. Even as their own intelligence services warned that Pakistan could not be trusted, some European governments continued to help Pakistan's nuclear program.
One name to emerge from the international investigations of Khan's nuclear trade was that of Urs Tinner, a Swiss engineer who monitored production of centrifuge parts at a factory in Malaysia. The parts were intended for Libya.
Tinner's father, Friedrich Tinner, who was also an engineer, came under scrutiny by the US Defense Department in the 1970s and again by Swiss export control authorities and the International Atomic Energy Agency in the last decade, because he was involved in exports to Pakistan and Iraq of technology that is used in uranium enrichment.
In the 1970s, Friedrich Tinner was in charge of exports at Vakuum-Apparate-Technik, or VAT, when that company was identified by the Defense Department as shipping items with possible nuclear-related uses to Pakistan, according to documents and VAT company officials. He later set up his own company, now called PhiTec AG, which was investigated by the Swiss authorities in 1996 for trying to ship valves for uranium enrichment centrifuges to Iraq.
The Tinners were never found to have broken any laws, Swiss officials said.
"Most of these people were heavily investigated in the 1970s, 1980s and 1990s," said Mark Hibbs, the European editor of the technical journal Nucleonics Week, published by McGraw-Hill. Hibbs has tracked the proliferation for years.
The problem began with the 1970 Treaty of Almelo, under which Britain, Germany and the Netherlands agreed to develop centrifuges to enrich uranium jointly, ensuring their nuclear power industry a fuel source independent of the US. Urenco, or the Uranium Enrichment Co, was established the next year with its primary enrichment facility at Almelo, Holland.
Security at Urenco was by most accounts slipshod. The consortium relied on a network of research centers and subcontractors to build its centrifuges and top-secret blueprints were passed out to companies bidding on tenders, giving engineers across Europe an opportunity to appropriate designs.
Khan, who worked for a Urenco Dutch subcontractor, FDO, or Physics Dynamic Research Laboratory, was given access to the most advanced designs, even though he came from Pakistan, which was already known to harbor nuclear ambitions. A 1980 report by the Dutch government on his activities found that he first visited the Almelo factory in May, 1972 and by late 1974 had an office there.
After Khan returned to Pakistan with blueprints and supplier lists for uranium enrichment centrifuges at the end of 1975, US intelligence agencies predicted that he would soon be shopping for the items needed to build the centrifuges for Pakistan's bomb. They soon detected a flow of equipment from Europe to Pakistan as Khan drew on Urenco's network of suppliers using a trusted group of former schoolmates and friends as agents.
The Dutch government report found that in 1976, two Dutch firms exported to Pakistan 6,200 unfinished rotor tubes made of superstrong maraging steel.
The tubes are considered the heart of Urenco's advanced uranium enriching centrifuges.
In 1983, a Dutch court convicted Khan in absentia on charges of stealing the designs, though the conviction was later overturned on a technicality.
Nonetheless, in the late 1980s, Belgian ministers led delegations of scientists and businessmen to Pakistan, not taking heed of warnings from experts in their own country that they were meeting with people who were involved in the military application of nuclear technology.
"Every well-informed person knows the inherent danger of an intense collaboration with a country such as Pakistan," wrote Rene Constant, director of Belgium's National Institute of Radioactive Elements in February 1987, chastising Philippe Maystadt, then the country's minister of economic affairs, after one such visit.
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