Primary materials: sand, gravel and clay

Kieswerk Wissel, part of the Putman organisation, is responsible for the extraction of sand, gravel and clay. In Wissel, close to Kalkar (Germany), the company operates advanced excavating equipment and a fully-automated distribution installation.

Thanks to a favourable location in respect of the motorway network and the Rhine river, we have ideal transport opportunities for loading or transporting the various products by ship or truck.

Production to customer specification

At Wissel, Putman produces a range of sand and gravel types, depending on the specifications outlined by the client. The high-quality sand an gravel products are suitable for use in the asphalt and concrete industry. The high-quality clayey top layer is used, for example, by brickworks and for (local) dyke reinforcements.

Social responsible raw material mining

Kieswerk Wissel aims for a maximum balance between nature and human need for raw materials. The sand and gravel are being extracted with minimum use of fossil fuels. The entire sand extraction system, grading installation and ship loading is powered entirely by green electricity. Our local employees are constantly looking for innovative ways to work more efficiently in order to maximize the sorting of sand and gravel, and to respond to our customers’ CO2-saving concrete mix designs. 

On the basis of a broad-based evaluation of the natural environment, the land and water-rich areas following extraction receive a new use as natural biotopes, or are made suitable for recreational purposes.

List of products
The following products are available for delivery from our facility.
Product type DoP       
Rhine sand 0-1  
Rhine sand 0-2   
Rhine sand 0-4
Rhine sand 0-8
Gravel for concrete 0-16   
Gravel for concrete 0-31,5   

Rhine gravel 2-6
Rhine gravel 2-8 
Rhine gravel 4-8
Rhine gravel 4-16
Rhine gravel 4-32
Rhine gravel 8-16
Rhine gravel 16-32 
Oversized gravel 30-130     
Filling sand
Topsoil / Loam     

The above listed products are our standard types. Declaration of Performance (DoP) for our standardized products are visible at ‘Downloads’.
On request, ranges of different individual mix qualities are available.
The quality and environmental management system of Kieswerk Wissel GmbH are both ISO 9001 and ISO 14001 certified.
In the matter of sustainable entrepreneurship, Kieswerk Wissel GmbH has obtained the Concrete Sustainability Council (CSC) certificate. 

The production processes’ quality, combined with the produced output, are maintained by means of the beneath mentioned certificates (‘Downloads’):
• KOMO ® product certificate
• NL BSB product certificate
• Benor 0-1:  0001-10, 0001-13, 0001-12 0001-14, 0-2, 0-4, 2-8, 4-16, 4-32, 8-16
• CE 2+