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Figure 16. Uranium in fuel assemblies loaded into U.S. civilian nuclear power reactors by year, 2010-14
Nuclear Industry Cycle http://web.evs. anl.gov/uranium/guide/uf6/index.cfm
The US Nuclear industry is mostly a foreign enterprise from every vantage. For many of these countries bribery is a way of life. Even the only remaining US enrichment facility LES-URENCO is owned by a tripartite consortium of the UK-the Netherlands, and two German utilities (E.On./RWE). On the lengthy list below, only a few may be US firms. UG USA is actually a German subsidiary of French State owned AREVA. Advance uranium asset management is Toshiba. J. Aron and Co. is based in Singapore. Mestena appears to be American. NUFCOR appears to be owned by Exelon, although some things say Goldman Sachs UK. MTM is the Megatons to Megawatts project where the US takes old Russian weapons uranium. USEC is defunct.
Table 24. Uranium sellers to owners and operators of U.S. civilian nuclear power reactors, 2012-14
One of the strangest is Traxys, apparently US-NY based, [but until 2014 German owned and Luxembourg registered], which gets 2,000 tons of uranium hexafluoride from the USDOE via Fluor-B&W Portsmouth LLC (FBP). Fluor-B&W Portsmouth LLC gets the uranium hexafluoride as payment for cleanup of the Portmouth Ohio defense enrichment site. Fluor-B&W Portsmouth LLC then sells this to Traxys for cash payment, according to the Traxys web site. The Traxys web site weirdly calls this “bartering” it for “cash payment”. This opens up a huge window for money-laundering and corruption doesn’t it? Bartering is an exchange of goods. This is buying and selling the uranium hexafluoride for cash. Some elaboration here by Traxys (Jan. 2015). Here the buying and selling is clear. But, they are selling half overseas to keep the price up, so that the US can purchase foreign uranium? To protect Honeywell Conversion services? http://www.energy.gov/sites/prod/files/2015/03/f20/25%20-%20Comment%20from%20Traxys%20North%20America%20LLC.pdf The nuclear fuel chain gets stranger by the minute. ConverDyn is General Atomics-Honeywell. See: https://en.wikipedia.org/wiki/ConverDyn
[August 8th update: Until last year Traxys belonged to German brothers Reibling and was registered in Luxembourg. Now it is majority owned by the Carlyle Group. We aren’t the only ones who found that this was not “bartering”: In 2011, the US GAO stated: “DOE has mischaracterized the transactions as barters, but it is not this mischaracterization that makes the transactions illegal. The transactions constituted sales, and sales—whether through an agent or not—are authorized by the USEC Privatization Act. Rather, DOE’s legal violation occurred when it failed to deposit the value of the net proceeds into the Treasury as required by the miscellaneous receipts statute.” Page 16 GAO-11-846 DOE’s Uranium Management Program, Sept. 2011 http://gao.gov/assets/590/585406.pdf There was also a Congressional investigation this past Spring.
Table 3. Uranium purchased by owners and operators of U.S. civilian nuclear power reactors by  origin country and delivery year, 2010-14

How does the uranium get out of this deep hole?
Roessing uranium mine namibia
Does this big yellow truck run off of pixie dust or solar? No it does not.
Mining Truck and Pickup US DHHS
Furthermore, Roessing Uranium Mine in Namibia has an ore grade of 0.026% U. http://www.wise-uranium.org/uona.html This means that 99.94% is (radioactive) waste rock tailings. “Recent reports that Rössing’s uranium might be diverted to Iran, which owns 15% of the shares in the mine, have been denied by the mine’s management.https://en.wikipedia.org/wiki/Rössing_Uranium_Mine

Even the exceptionally high grade Canadian deposits are about 18% grade meaning that 82% is (radioactive) waste rock. And, for every kilogram of uranium enriched, 7 to 10 kg of (still radioactive) depleted uranium is produced.
Figure 5. Uranium purchased by owners and operators of U.S. civilian nuclear power reactors by selected origin country and delivery year, 2010-14
Foreign sourcing of uranium and foreign enrichment facilitates the perpetuation of the lie that nuclear energy is carbon emission free or low carbon emission. How does anyone think that the uranium gets out of the mine? Pixie dust? Solar powered trucks? Clearly not. Huge diesel trucks, and surely not bio-diesel. Even if they did run off of bio-diesel, this bio-diesel could be used elsewhere to eliminate use of petroleum. Processing and enrichment also use energy, as does cooling of the waste for years. Radionuclides cause radiolysis which can create greenhouse gases, as well.
Figure 15. Purchases of enrichment services by owners and operators of U.S. civilian nuclear power  reactors by selected origin country and year, 2010-14
Table 16. Purchases of enrichment services by owners and operators of U.S. civilian nuclear power   reactors by origin country and year, 2010-14

From the US EIA:
AUGUST 28, 2013
The U.S. relies on foreign uranium, enrichment services to fuel its nuclear power plants
US EIA pie chart uranium source for US NPS
Source: U.S. Energy Information Administration, Uranium Marketing Annual Report

Owners and operators of U.S. commercial nuclear power reactors buy uranium in various forms as well as enrichment services from other countries. U.S. nuclear plants purchased 58 million pounds of uranium in 2012 from both domestic and foreign suppliers; 83% of this total was of foreign origin. About 38% of the enriched uranium needed to fabricate fuel for U.S. reactors was supplied by foreign enrichers.

What is the nuclear fuel cycle?

The nuclear fuel cycle is a multi-step process. Beginning with exploration and mining of uranium, it is then processed into uranium concentrate (U3O8, often called yellowcake). This concentrate is then converted into natural uranium hexafluoride (UF6) gas, enriched, fabricated into nuclear fuel, and sent to reactors. These steps often take place at different facilities.

Owners and operators of commercial nuclear power reactors buy uranium in the form of uranium concentrate, uranium hexafluoride, and/or enriched uranium. If uranium is purchased after the enrichment process, the only step remaining is the fabrication into nuclear fuel. Historically, U.S. owners and operators have purchased most of their uranium from foreign countries. In 2012, 84% of foreign-supplied uranium came from Canada, Russia, Australia, Kazakhstan, and Namibia. The rest came from Uzbekistan, Niger, South Africa, Brazil, China, Malawi, and Ukraine.

Uranium purchased earlier in the nuclear fuel cycle, such as the purchase of uranium concentrate, must be converted to natural uranium hexafluoride and enriched before reactor fuel can be fabricated. The owners and operators of U.S. commercial nuclear power reactors pay for conversion, enrichment, and fabrication. During 2012, a total of 52 million pounds of uranium hexafluoride (UF6) was delivered to enrichers in China, France, Germany, Netherlands, Russia, United Kingdom, and the United States. Enrichers in the United States received 62% of the deliveries, and the remaining 38% went to foreign enrichers.
US EIA Uranium Hexafluoride
Source: U.S. Energy Information Administration, Uranium Marketing Annual Report
Note: * specific country unknown

The capacity of enrichment plants is measured in terms of separative work units (SWU). SWU is a measure of how much work it takes to enrich uranium. In 2012, the average price per SWU was $141.36, and owners and operators of U.S. commercial nuclear power reactors purchased enrichment services totaling 16 million SWU. This represents a total cost to the owners and operators of U.S. commercial nuclear power reactors of about $2.3 billion. http://www.eia.gov/todayinenergy/detail.cfm?id=12731

2014 updates from: http://www.eia.gov/uranium/marketing/pdf/2014umar.pdf