Soilmec is a large Italy-based international construction company that specializes in below-ground construction. It operates 12 subsidiary companies and has 45 distributors (Company Website).
Soilmec has a full branch in Tehran which handles "sales, customer care, technological assistance, spare parts, and maintenance."
Soilmec lists on its website Iranian drilling company Tahran Co. as a major client for drilling and foundation equipment.
Soilmec manufactures a wide range of tunneling equipment. The New York Times has reported that Iran is using an underground tunnel network to hide missiles and nuclear facilities.