Perma-Fix to Present at the Stifel Nicolaus Cleantech Conference 2011

/ Source: GlobeNewswire

ATLANTA, May 9, 2011 (GLOBE NEWSWIRE) -- Perma-Fix Environmental Services, Inc. (Nasdaq:PESI) a leading provider of nuclear waste treatment services, today announced that Dr. Lou Centofanti, CEO, will present on May 24, 2011 at the Stifel Nicolaus Cleantech Conference 2011 at the Omni Berkshire Place in New York. The presentation is scheduled for 2:40 PM (ET).

The presentation will be broadcast live via the internet and can be accessed from the investor relations section of the company's website: . The replay will be available within one hour of the live presentation and will remain available for 90 days following the conference.

About Stifel Nicolaus

Stifel Financial Corp. is a full-service regional brokerage and investment banking firm, established in 1890 and based in St. Louis, Missouri. The Company provides securities brokerage, investment banking, trading, investment advisory, and related financial services through its wholly owned subsidiaries, primarily Stifel, Nicolaus & Company, Incorporated, to individual investors, professional money managers, businesses, and municipalities. Stifel Nicolaus hosts several client conferences and events each year, attracting top institutional investors as well as leading companies in our sectors of focus - Aerospace, Defense & Government Services, Cleantech, Consumer & Retail, Diversified Industrials, Education, Energy, Financial Institutions, Healthcare, Media & Telecom, Mining, Real Estate, Technology, and Transportation & Logistics.

About Perma-Fix Environmental Services

Perma-Fix Environmental Services, Inc., a national environmental services company, provides unique mixed waste and industrial waste management services. The Company's increased focus on nuclear services includes radioactive and mixed waste treatment services for hospitals, research labs and institutions, federal agencies, including DOE, DOD, and nuclear utilities. The Company's industrial services treat hazardous and non-hazardous waste for a variety of customers including, Fortune 500 companies, federal, state and local agencies and thousands of other clients. Nationwide, the Company operates seven waste treatment facilities.

The Perma-Fix Environmental Services, Inc. logo is available at

Please visit us on the World Wide Web at .

CONTACT: David K. Waldman-US Investor Relations Crescendo Communications, LLC (212) 671-1020 x101 Herbert Strauss-European Investor Relations herbert@eu-ir.com +43 316 296 316