Read between the lines:
On the 14th, the NRC advised Americans to follow the Japanese recommendations.
On the 16th, the NRC recommended the 50-mile evacuation radius
On the 17th, nuclear industry lobbyists questioned the scientific basis for the 50-mile radius.
On the 17th, the DOE said two seperate tests were consistent with the new recommendation.
On the 25th, the FOIA was announced.
On the 30th, the NRC said it would use a 50 mile radius in a similar US accident.
According to one of the articles below, "In the U.S., nuclear reactor licensees and local governments are only asked to provide for evacuation out to 10 miles."
This was done in spite of massive lobbying pressure by the nuclear industry.
Nuclear industry lobbyists are NOT happy about this.
http://articles.latimes.com/2011/mar/14/news/la-pn-white-house-nuclear-response-20110315March 14, 2011
"Right now, based on the information we have, we believe that the steps that the Japanese are taking to respond to this crisis are consistent with the approach that we would use here in the United States," Jaczko said. "We advise Americans in Japan to listen to and to follow the instructions of the Japanese government with regard to the nuclear facilities."
http://news.yahoo.com/s/usnw/20110325/pl_usnw/DC71791Fukushima-Related FOIA Request: Full Data Sought on Radiation Levels That Led To NRC Chair's Call for 50-Mile Evacuation Radius for Americans in J
WASHINGTON, March 25, 2011 –
Why Aren't Japanese and American Citizens Getting All the Facts? "Extreme" Step Seen As Indication of Much Higher Radiation Levels Than Revealed So Far by NRC, Japanese Government
...
On March 16, 2011, NRC Commissioner Gregory B. Jazcko told Congress that he was recommending the 50-mile evacuation radius. (See
http://www.nrc.gov/about-nrc/organization/commission/comm-gregory-jaczko/0317nrc-transcript-jaczko.pdf.)
The scope of the recommended evacuation is highly unusual and suggestive of extraordinarily high radiation levels in excess of those reported to the public in Japan and the U.S., the three groups said.
In the U.S., nuclear reactor licensees and local governments are only asked to provide for evacuation out to 10 miles. ...
http://www.nasdaq.com/aspx/stock-market-news-story.aspx?storyid=201103171206dowjonesdjonline000498&title=us-nuclear-industry-questions-scientific-basisof-us50-mile-evacuation-in-japanUS Nuclear Industry Questions 'Scientific Basis' Of US' 50-Mile Evacuation In Japan
By Tennille Tracy, Of DOW JONES NEWSWIRES
WASHINGTON -(Dow Jones)- The U.S. nuclear power industry is questioning the " scientific basis" of the Obama administration's decision to evacuate U.S. citizens and military personnel within a 50-mile radius from the Fukushima power plant in Japan.
"We have questions about the scientific basis for that," said Steve Kerekes, a spokesman for the Nuclear Energy Institute, in an interview with Dow Jones Newswires.
The Obama administration's 50-mile evacuation made headlines Wednesday because Japanese officials have only evacuated an area within 12 miles.
Based on the available data, Kerekes said Japan's evacuation policy appears " sufficient to minimize public health impacts."
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03-17-111206ET
http://www.deseretnews.com/article/700119472/US-defends-50-mile-evacuation.htmlU.S. defends 50-mile evacuation
Published: Thursday, March 17, 2011 11:05 p.m. MDT
Associated Press
WASHINGTON — The Obama administration said Thursday that radiation leaking from the crippled Japanese nuclear complex does not present a danger to the western United States or its Pacific territories at this time. Officials also defended a proposed 50-mile evacuation zone for American troops and citizens in Japan.
...
The U.S. Energy Department said it had conducted two separate tests to measure how much radioactive material had been deposited on the ground in Japan. That data, Poneman said, was consistent with the recommendation for American citizens to evacuate a 50-mile radius around the plant....
http://www.boston.com/news/science/articles/2011/03/31/nuclear_crisis_evacuation_plan_outlined/Nuclear crisis evacuation plan outlined
Bloomberg News / March 31, 2011
WASHINGTON — Nuclear Regulatory Commission chairman Gregory Jaczko said
the federal government would seek to evacuate residents within 50 miles of a power plant in the event of an accident similar to Japan’s nuclear crisis.Jaczko made the comment in prepared testimony yesterday before a Senate Energy and Natural Resources Committee panel.
...