Hanlon Engineering & Associates, Inc. (HEA) is a full-service multidisciplinary in-house engineering and management firm with a corporate office in Tucson, Arizona, and branch office in Elko, Nevada. For 23 years, our firm has specialized in the mining industry providing services and support for small to multimillion dollar projects.

In 2020, GR Engineering Services (GRES) acquired HEA to expand their international position into the Americas. The addition of GRES’ knowledge and resources to our own has expanded our range of expertise allowing us to better support our clients from project conception and feasibility through permitting, design, engineering, procurement, construction, and commissioning.

Internationally recognized, a significant portion of the HEA/GRES work involves renovation and modernization of existing facilities throughout the United States, Canada, and Central and South Americas.