In the previous work, "Earth" Ltd. cooperated with the following companies:

• Tehnograd d.d. Tuzla,
• University of Tuzla, School of engineering Tuzla,
• Mining institute Tuzla,
• Traser Sarajevo,
• Direkcija za puteve Tuzla (Agency for roads),
• Direkcija za obnovu i izgradnju Tuzla (Agency for redevelopment and construction),
• Tuzlaputevi Tuzla.