Production of Clean Energy From Steel Mill Gases

IMMEDIATE RELEASE

Harsco And Lanzatech Sign Strategic Alliance to Advance the Production of Clean Energy From Steel Mill Gases

HARRISBURG, PA (August 15, 2011) . . . Worldwide industrial solutions company Harsco Corporation (NYSE: HSC) and clean energy technology company LanzaTech today jointly announced the signing of a strategic alliance to promote the capture and reuse of steel mill flue gases as an environmentally significant and beneficial source of reliable energy.

The agreement, signed today at Harsco’s world headquarters, taps into Harsco’s global leadership serving the worldwide steel industry, in combination with LanzaTech’s proprietary bioenergy technologies for reducing the carbon footprint of integrated steelmaking operations. Together, the two companies will jointly develop plans to present the LanzaTech biotechnology to Harsco’s major steel mill customers and explore potential business relationships for installing and operating commercial facilities at selected sites throughout the world.

Founded in 2005, LanzaTech is the first company to successfully demonstrate production of fuel-grade ethanol from steel mill gases. Its proprietary biotechnologies convert the waste gases emitted by blast furnace, coke oven and BOF operations into low cost, zero carbon ethanol, thereby significantly reducing greenhouse gas emissions while also providing a commercially scalable alternative to traditional ethanol production and its heavy reliance on agricultural food crops. The agreement with Harsco will now accelerate the introduction of this technology to steelmaking customers throughout the Americas, Europe and selected emerging markets.

“The conversion of industrial waste streams into beneficial ‘green’ resources has long been a Harsco mainstay,” said Harsco Chairman, President and CEO Salvatore Fazzolari. “With LanzaTech, we now add another dimension to our ability to bring innovation to our customers and at the same time, help build a more sustainable environment.”

Added LanzaTech CEO Dr. Jennifer Holmgren, “Harsco’s commitment to minimizing the environmental impact of metal production processes is in line with the unique technology LanzaTech has developed. As heavy industries worldwide face an increasingly stringent regulatory climate, our relationships with committed partners such as Harsco respond to these challenges with technology-based solutions for a cleaner environment that also enable continued growth.”

About LanzaTech
Founded in New Zealand in 2005, LanzaTech has developed a novel gas-liquid fermentation process that produces fuel grade ethanol and key chemical building blocks used to make polymers, plastics and hydrocarbon fuels. With agreements now in place across a variety of sectors internationally, including steel, coal, refining and chemicals, LanzaTech’s technology is being scaled rapidly to commercial production. For more information go to www.lanzatech.com.

About Harsco
Harsco Corporation is a global solutions company serving major industries fundamental to worldwide infrastructure development and economic growth, including steel and metals, construction, railways and energy. Harsco’s common stock is a component of the S&P MidCap 400 Index and the Russell 1000 Index. Additional information can be found at www.harsco.com.

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