Interxion Holding NV (NYSE:INXN), a leading European provider of carrier neutral colocation data centre services, announced that CFO Josh Joshi is scheduled to speak at the Citi 2012 Entertainment, Media, and Telecommunications Conference on Wednesday, January 4, 2012 at 11:50 a.m. PT at the Palace Hotel in San Francisco, California. Interested parties can listen to the session via a live webcast at http://www.veracast.com/webcasts/citigroup/emt2012/42107286.cfm. An archived replay will be available approximately one hour after the conclusion of the live event at the same URL and will remain available for replay through April 3, 2012.

Interxion is a leading provider of carrier-neutral colocation data centre services in Europe, serving over 1,200 customers through 28 data centres in 11 European countries.

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HCA Holdings, Inc. (NYSE:HCA) announced that Wayne J. Riley, M.D., President and CEO of Meharry Medical College, has been named an independent director of HCA’s board, effective January 1, 2012. With his addition, HCA’s board of directors increases from 12 to 13. “Dr. Riley has a strong background in academic medicine, primary care, health policy and health administration,” said Richard M. Bracken, Chairman and Chief Executive Officer of HCA. “He is a highly respected health leader, and we are pleased to welcome him to our board of directors.”

HCA Holdings, Inc. offers health care services in the United States. It owns, manages, or operates hospitals, freestanding surgery centers, diagnostic and imaging centers, radiation and oncology therapy centers, rehabilitation and physical therapy centers, and various other facilities.

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United States Steel Corporation (NYSE:X) announced that interested shareholders, investors and others may listen to the company’s fourth quarter 2011 conference call with securities analysts on Tuesday, Jan. 31, 2012 , at 3 p.m. EST . The call, which will be available via the U. S. Steel website, will cover fourth quarter 2011 financial results and may include forward-looking information. U. S. Steel officials participating in the call will be John P. Surma , chairman and CEO; Gretchen R. Haggerty , executive vice president and CFO; and Dan Lesnak , manager-investor relations.

United States Steel Corporation produces and sells steel mill products in North America and Central Europe. It operates in three segments: Flat-rolled Products (Flat-rolled), U. S. Steel Europe (USSE), and Tubular Products (Tubular).

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Cleantech Transit Inc. (CLNO)

Cleantech Transit Inc. was founded to capitalize on technology advances and manufacturing opportunities in the growing clean energy public transportation sector. The Company has expanded its focus to invest directly in specific green projects that could maximize shareholder value. Recognizing the many economic and operational advances of converting wood waste into renewable sources of energy, Cleantech Transit Inc. has selected to invest in Phoenix Energy (www.phoenixenergy.net).

The most common method for producing ethanol from biomass is through a process known as fermentation, which is an anaerobic biological process in which sugars are converted to alcohol by the action of microorganisms such as yeast. Fermentation is a technology that has been used for centuries to make beer and wine. The process requires sugars. If the carbohydrates contained in the starting biomass are starch, such as is found in corn, then the starchy material first has to be converted to sugars. The most common crop used in the United States for making ethanol for gasoline additive is corn, whereas in tropical countries such as Brazil, the crop of choice is sugar cane.

Cleantech Transit, Inc. (CLNO) is pleased to announce it has met its funding requirement to secure the Company’s ability to earn in 25% of the 500KW Merced Project.

The Company is in the final stages of closing its initial interest in the Merced Project and is currently working on completing the necessary documentation and expects closing the transaction soon. As previously announced Cleantech has the option to earn up to 40% of the Merced Project and the Company plans to continue to work towards increasing its interest in the Merced Project as they move ahead.

Biodiesel is normally produced from vegetable oils, animal fats, or greases. The process involves the use of a catalyst and alcohol. The catalyst is typically sodium hydroxide or potassium hydroxide, which is dissolved in methyl alcohol. Any type of vegetable oil or used cooking oil can be used to make biodiesel; most biodiesel today is made from soybean oil. Biodiesel production from algae is still in the experimental stage. Algae are expected to produce from 10 to 100 times more biodiesel compared with soybeans and other seed crops.

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