Tekfen Partners with Petra to Bring New Hard Rock Undergrounding Technology to Its EMEA Operations 4 min read People and Community Tekfen Partners with Petra to Bring New Hard Rock Undergrounding Technology to Its EMEA Operations AETOSWire June 16, 2022 ISTANBUL — Tekfen Holding A.S. (IST: TKFEN), a leading conglomerate in the engineering, contracting and agriculture industries,...Read More