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We work safe –
or not at all.

Mainka specializes in construction projects in safety-critical industries such as chemicals, energy, and logistics. With clear processes, trained personnel, and a safety culture that is put into practice, our accident rate is a fraction of the average for the construction industry.

Mainka at a glance

Total output 2025

> 330

€ million p.a.

Founded

1895/1949

Branches

8
  • Lingen (head office)
  • Brunsbüttel
  • Gelsenkirchen
  • Cologne
  • Münster
  • Osnabrück
  • Papenburg
  • Wuppertal

Mainka employees

> 750

Accident statistics

Services

Construction projects for chemicals, energy and logistics

We plan, construct, renovate and maintain industrial buildings safely, reliably and with many years of experience. Our focus is on complex projects in sensitive industrial environments such as chemical parks, power stations, refineries, energy infrastructure and large logistics sites.

Reference

New construction Gas Terminal Emden

Traffic area constructionUnderground constructionConcrete construction & civil engineeringPipeline construction

Construction of a New Gas Terminal in Emden

For our client Gassco, we constructed a new gas terminal in Emden — a central facility for energy supply. The project included extensive earthworks, concrete and reinforced‑concrete works, asphalt construction as well as the complete technical building services (TGA).

With around 150,000 m³ of excavated soil, 10,000 m³ of concrete and 25,000 m² of asphalt surfaces, a highly complex infrastructure was created for the safe handling and onward transfer of gas. All works were carried out during ongoing operations and included the execution of media‑tight surfaces.

Figures and facts:

  • Earthworks
  • Sewer and pipeline construction
  • Road construction works
  • Asphalt construction
  • Concrete works
  • Reinforced‑concrete works
  • Interior works
  • Construction of media‑tight surfaces
  • Technical building services
  • Works carried out during ongoing operations
Customer Gassco AS
Location Emden, Germany
Contract value approx. €28 million
Main construction period 20 months

Of our more than 750 employees, around 60% are construction site personnel, whom we train regularly. On average, we devote 2% of annual working hours to training.

order structure

For whom and why?

We generate more than 90% of our turnover in the chemical, energy and specialised logistics sectors. Customers from these sectors trust in our experience because we construct complex industrial buildings reliably and safely.