Construction activities expanded in the 1960s and ‘70s
In the 1960s, Lemminkäinen adopted a so-called total contract model in road construction. Through determined work, the company had become the largest road construction company in the country by the end of the decade.
In 1969, we completed what was at that time the largest ever road construction contract awarded in Finland: 12.6 km of the Porvoo motorway.
The 1960s saw the emergence of the concept of occupational safety and health: the company provided its employees with safety instructions and monitored the accident rate. As the Occupational Safety and Health Act came into force in 1972, safety and health committees were set up at all localities and safety and health representatives were appointed for all construction sites.
Tunneling work begins
In the 1970s, we were awarded large underground excavation and crushing contracts. These included, for example, the Päijänne Tunnel and the Metro tunnel in Helsinki. With these projects we gained a lot of valuable experience in tunnel construction.
We also started to work with civil engineering projects. Among our first civil engineering contracts were the Haaga district heating project in Helsinki and the construction of the first natural gas pipeline for Neste Oy from Imatra to Kotka. We also carried out the infrastructure construction project for Outokumpu Oy’s Tornio steel works.