HARSCO'S INFRASTRUCTURE SECURES MULTI-YEAR REFINERY SERVICES RENEWAL
May 31, 2012

CAMP HILL, PA (May 31, 2012) . . . Global industrial services and engineered products company Harsco Corporation (NYSE: HSC) announced today the multi-year contract renewal and expansion of its onsite access and insulation services to a major oil refinery in the Netherlands under an award valued at close to $30 million over its duration.

The five-year contract renewal from Zeeland Refinery N.V. expands Harsco's exclusive onsite role for providing 24/7 access support and repairs to the plant's mechanical insulation, a critical component of refinery operations that mitigates heat loss and reduced crude oil production due to thermal inefficiencies. A typical refinery plant can have more than 350 miles of insulated piping (1.85 million linear feet), operating at temperatures in excess of 600 degrees. Harsco supports Zeeland Refinery with dedicated scaffolding support and services for the maintenance and repair of both its thermal and cold insulation, and under the expanded framework agreement, will also now provide mobile elevated work platforms and other access services. The refinery, a joint venture of France-based Total S.A. and Russia's OAO Lukoil, processes approximately 7,500 kt of crude oil and 2,500 kt of heavy fuel oil annually.

The award reflects Harsco's growing role in providing large-scale, recurring industrial plant maintenance services on a global basis, including specialized services for mechanical insulation at leading petrochemical and refinery operations. These latter services have continued to play an increasing role since the Company's two specialty acquisitions in this sector: its 2006 acquisition of the Cleton industrial maintenance service operations in the Netherlands, Belgium and Germany and its 2009 acquisition of the UK-based Nicol, businesses, which also include industrial site cleaning and painting services.

Announcing the award, Harsco Infrastructure Group CEO Ivor J. Harrington said, "Given that these plants are operational 24/7, the most important performance criteria are safe working practices and reliable service. In both respects, Harsco has earned A-class supplier status, which is a great testament to Harsco's people and safety, and will continue to be a key factor in future awards."

Harsco Corporation is a diversified industrial company that is helping build the world by providing essential services and products to fundamental global industries, including steel and metals production, construction, railways and energy. Harsco's common stock is a component of the S&P MidCap 400 Index and the Russell 1000 Index.www.harsco.com.

# # #