Standort Heringen Wintershall
Hattorf, Wintershall, Unterbreizbach, Merkers

Plant Werra – Our biggest potash plant

Standort Heringen Wintershall
Hattorf, Wintershall, Unterbreizbach, Merkers

Plant Werra – our biggest potash plant

Standort Unterbreizbach
Hattorf, Wintershall, Unterbreizbach, Merkers

Plant werra – our biggest potash plant

Today's Werra plant was established in 1997 through the merger of the four formerly independent plants Hattorf and Wintershall (Hesse) as well as Unterbreizbach and Merkers (Thuringia). This created a highly efficient production facility: The integrated network includes crude salt supply, production, wastewater management, workshops, railway operations, energy supply, administration, and training.

Erlebnis Bergwerk Merkers
Visitor center
Address
Zufahrtstraße 1 OT Merkers
36460 Krayenberggemeinde
Germany
K+S Minerals and Agriculture GmbH Central Engineering Combined workshop-Central workshop
Engineering / Support
50
Training site
Address
Lengerserstraße 10
36266 Heringen
Germany
K+S Minerals and Agriculture GmbH Potash mine Werra, Distribution Center
Administration
Logistics
Training site
Address
Hattorfer Straße 78
36269 Philippsthal
Germany
Truck Directions
Am Zollhaus 2a
36269 Philippsthal
Germany
K+S Minerals and Agriculture GmbH Potash mine Werra, Hattorf
Production / Administration
Address
Hattorfer Str. 78
36269 Philippsthal
Germany
K+S Minerals and Agriculture GmbH Potash mine Werra, Merkers
Engineering / Support
Address
Zufahrtstraße 1 OT Merkers
36460 Krayenberggemeinde
Germany
K+S Minerals and Agriculture GmbH Potash mine Werra, Shaft Hera
Production
Waste management
Address
Nipper Straße
36269 Philippsthal
Germany
Underground Waste Disposal Herfa-Neurode
Waste management
Address
Herfagrund
36266 Heringen
Germany
K+S Minerals and Agriculture GmbH Potash mine Werra, Shaft Sünna (Shaft Unterbreizbach II)
Production
Waste management
Address
an B84 gelegen
36404 Sünna
Germany
K+S Minerals and Agriculture GmbH Potash mine Werra, Unterbreizbach
Production
Address
Schachtstraße
36414 Unterbreizbach
Germany
K+S Minerals and Agriculture GmbH Potash mine Werra, Wintershall
Production
100
Training site
Address
In der Aue 1
36266 Heringen
Germany
Underground Recovery Plant Wintershall
Waste management
Address
Herfagrund
36266 Heringen
Germany

Impressive shaft towers and mine cars at all entrances to the Werra valley indicate that mining has shaped the entire region and continues to do so. The area of the mine underground is similar in size to the city of Munich with suburbs. The integrated facility is the largest site of K+S Minerals and Agriculture with an annual output of about 20 million tonnes of crude salt.

The products manufactured from crude salt mined underground are delivered to numerous countries worldwide. In addition to fertilizers, preliminary products for various technical and industrial applications as well as for the pharmaceutical, food and feed industries are manufactured here.

Partner in the region

Plant Werra employs almost 4,400 people (including the central technology craftsmen at the site and 300 trainees), almost half of whom work underground. This makes it an important employer and training company between Bad Hersfeld and Eisenach. 85% of the employees come from the Wartburg district and the district of Hersfeld-Rotenburg. In addition, the plant is an important client for the local mid-sized economy and a major taxpayer for the local communities. This makes it a central building block for the development of the East Hesse/South Thuringia region.

The Merkers Adventure Mine attracts more than 70,000 visitors to the region every year and around 3,000 visitors a year take part in guided tours of the Werra Caliber Mining Museum on Monte Kali. In addition, the Werra plant is active as a sponsor - mainly in the promotion of youth sports.

 

Press release of January 18, 2024

K+S Werra potash plant celebrates outstanding production anniversary

It's an anniversary of a special kind: one billion tonnes of crude salt have been extracted from the Hattorf-Wintershall mine of the K+S Werra potash plant in eastern Hesse since 1903. The billionth tonne was brought to the surface during the midday shift on January 18, 2024. If the total quantity were loaded onto bulk goods railcars, the train would reach around the equator seven and a half times.

Press release of October 17, 2022

K+S sets up Werra plant for the future

K+S is taking a major step in the strategic optimization of its existing business and the further reduction of the environmental footprint of domestic potash production. The extensive “Werra 2060” project strengthens competitiveness and extends the life of the Werra plant with increased and more stable production in the long term. It secures jobs and value creation in the region in the long term and ensures that K+S can continue to supply its customers with future-oriented products.

Fact sheet

Plant Werra at a glance

Founded 1997
Type of site Production
Crude salt extraction: approx. 19 million tonnes/year
Capacity / production: approx.  3.2 million tonnes product/year
Number of employees: approx. 4,400 total workforce
approx. 300 trainees
Working at K+S

One employer – many opportunities

Discover attractive and varied job opportunities at K+S and get to know us as an employer. In motivated teams, you will have the opportunity to contribute your knowledge, strengths and ideas in a targeted way. In addition, we offer you attractive social benefits, extensive development opportunities, company health management and much more. We are looking forward to getting to know you!

Waste Management

Long-term safe disposal of hazardous waste

As a certified waste management company, REKS provides solutions for disposal, covering of potash tailings piles, and complete services for the recycling of saline aluminum slag.

Herfa-Neurode underground waste disposal site

The safest place for highly contaminated waste that cannot be recovered is at our two two underground waste disposal sites at Herfa-Neurode and Zielitz. Herfa-Neurode, the first underground waste disposal site of its kind in the world, was opened in 1972. With almost 50 years of experience, we are now able to dispose of a wide range of hazardous wastes from various industries. 

In the abandoned mine fields of our potash mines, we optimally utilize the geological conditions for permanently and safely disposing of your waste at depths of 500 to 800 meters. Far below the groundwater level, sealed gas-tight by salt rock up to 300 meters thick and additionally insulated by further water-blocking layers, people and the environment are safe from this waste, now and in the future. In Herfa-Neurode, both packaged and bulk delivery in silos of waste is possible. 

Underground waste recovery

Many mineral substances can be recovered underground. We place this waste in the cavities once created during the extraction of potash and rock salt, where raw materials are no longer mined. We support the pillars between the mining chambers and therefore not only use the waste as a resource, but also ensure mining safety at the same time. In around 25 years of underground recovery, we have developed numerous proprietary processes for utilizing the material properties of less contaminated waste, and are constantly working on new processes as well as techniques for recovering even more waste. 


At the Wintershall site, pneumatically conveyable waste is transferred to standing silos and then filled into big bags. The contents of the big bags are mechanically compacted on a vibrating plate. It is also possible to deliver materials already packed in big bags, provided they meet the recovery requirements. The big bags are placed underground in a backfilling process. Finally, the remaining cavities are filled with moist salt. In this way, the connection to the pillars is achieved. 

At the Hattorf site, pneumatically conveyable waste is transferred to standing silos and processed into products in a mixing plant according to specific recipes. After being filled into big bags, they harden. Waste already delivered in big bags is stored directly if suitable. The big bags are placed underground in a backfilling process. Remaining cavities are filled with moist salt. In this way, the connection to the pillars is achieved. 

At the Unterbreizbach site, pneumatically conveyable material is initially transferred to standing silos and transported underground via closed pipeline systems. With the addition of liquids (salt solution), a slurry of thick material is formed which is pumped into cavities. There it hardens with complete setting of the liquid and acts as a support for the salt rock.

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