Öner Yılmaz General Manager
Soner Temel Mühendislik İnşaat ve Ticaret Anonim Şirketi (STM) is among the leading Tunneling
and Infrastructure contractors in Turkey.
Our company offers services in the following fields;
Tunneling (Metro, Highway, Energy, Irrıgation, Waste Water Tunnels and Shafts)
Soil improvement and ground stability
Mine development and ore extraction.
Construction of metro stations
Deep excavation and retaining walls
As of its establishment in 2000, STM offers creative solutions with its strong technical team and
expert on-site personnel through following new technological improvements closely. As a result
of this, good relations are developed within the sector. It adds value to its brand with the high
performance of work and qualified applications. This differentiates STM from its competitors and
takes it to a preferred position.
Its loyalty to ethic values, quality oriented philosophy, and the importance given to the environment,
occupational health & safety form the road map of STM.
STM proved its experience particularly in the field of tunneling and infrastructure projects and
through realizing the first “Umbrella Arch Method” in Turkey; it is a construction company that
contributed in the tunneling industry in Turkey. It is also a pioneer in deep excavation and retaining
wall applications throughout Turkey.