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Uranium ore is mined in several ways: by open pit, underground, in-situ leaching, and borehole mining (see uranium mining). Low-grade uranium ore mined typically contains 0.01 to 0.25% uranium oxides. Extensive measures must be employed to extract the metal from its ore. High-grade ores found in Athabasca Basin deposits in Saskatchewan, Canada can contain up to 23% uranium oxides on average. Uranium ore is crushed and rendered into a fine powder and then leached with either an acid or alkali. The leachate is subjected to one of several sequences of precipitation, solvent extraction, and ion exchange. The resulting mixture, called yellowcake, contains at least 75% uranium oxides U3O8. Yellowcake is then calcined to remove impurities from the milling process before refining and conversion.
What percentage range of uranium dioxide is usually contained in low-grade uranium ore?
A: unanswerable

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In early 1942, the governments of smaller powers began to push for an inter-governmental Asia-Pacific war council, based in Washington, D.C.. A council was established in London, with a subsidiary body in Washington. However, the smaller powers continued to push for an American-based body. The Pacific War Council was formed in Washington, on 1 April 1942, with President Franklin D. Roosevelt, his key advisor Harry Hopkins, and representatives from Britain, China, Australia, the Netherlands, New Zealand, and Canada. Representatives from India and the Philippines were later added. The council never had any direct operational control, and any decisions it made were referred to the U.S.-UK Combined Chiefs of Staff, which was also in Washington. Allied resistance, at first symbolic, gradually began to stiffen. Australian and Dutch forces led civilians in a prolonged guerilla campaign in Portuguese Timor.
Where was the U.S.-UK Combined Chiefs of Staff located?
A: Washington

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The BBC is also renowned for its production of costume dramas, such as Jane Austen's Pride and Prejudice and contemporary social dramas such as Boys from the Blackstuff and Our Friends in the North. The BBC has come under pressure to commission more programmes from independent British production companies, and indeed is legally required to source 25% of its output from such companies by the terms of the Broadcasting Act 1990. Programmes have also been imported mainly from English-speaking countries: notablethough no longer shownexamples include The Simpsons from the United States and Neighbours from Australia. Because of the availability of programmes in English, few programmes need use sub-titles or dubbing unlike much European television.
What is a popular American show that was shown on the BBC?
A: The Simpsons

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The Paymaster General Act 1782 ended the post as a lucrative sinecure. Previously, Paymasters had been able to draw on money from HM Treasury at their discretion. Now they were required to put the money they had requested to withdraw from the Treasury into the Bank of England, from where it was to be withdrawn for specific purposes. The Treasury would receive monthly statements of the Paymaster's balance at the Bank. This act was repealed by Shelburne's administration, but the act that replaced it repeated verbatim almost the whole text of the Burke Act.
How often could paymasters make withdrawals?
A:
unanswerable