Harsco Corporation () is a diversified, worldwide industrial company based in the United States. Harsco operates in 45 countries and employs approximately 21,000 people worldwide. The company provides industrial services and engineered products that serve some of the world’s largest and most essential industries, including steel, construction, railways, and energy. The 2005 revenues totaled $2.8 billion, nearly 60% of which were generated internationally.