Primary (building) materials
Primary raw materials for sustainable construction
Own primary aggregates and clay extraction
We extract, refine and supply primary sand and gravel in any specification with a small environmental footprint and low Environmental Cost Indicator (ECI) value. In this way, we serve construction customers in North Rhine-Westphalia in Germany, the Netherlands and Belgium.
Sustainable extraction
Our aggregate extraction is done entirely electrically. We have an electric sand dredger and grader, and ship loading is also electrified. Efficient storage ensures energy savings.
Primary building materials for concrete and infrastructure building companies
Industrial sand and gravel
for concrete plants and factories
Our sand and gravel extraction company Kieswerk Wissel in Germany supplies high-quality industrial sand and gravel to concrete producers, among others. Using its own loading quay on the river Rhine, the raw materials are loaded into barges for transport and just-in-time delivery.
- Industrial sand 0-250
- Industrial sand 0-1 (fine/coarse)
- Industrial sand 0-2 (fine/coarse)
- Industrial sand 0-4 (fine/coarse)
- Gravel
Aggregates and clay
for infrastructure building companies and brickworks
Sand, gravel and clay can be transported to contractors by ship or by axle. Direct, just-in-time delivery from Kieswerk Wissel in Germany, or from our storage and transhipment site in Westervoort, Netherlands.
- Filling sand
- Rhine sand (various types)
- Rhine gravel (various types)
- Clay
Quality as an underlying principle
The Putman Groep
We are continuously optimising our products and services. We are continuously optimising our products and services. This gives us a control over improving environmental performance, delivering social value and focusing on quality.
Ecologically responsible raw material extraction
Low ECI value thanks to:
Electric, emission-free
sand and gravel extraction and ship loading
Bulk transport
by inland shipping
Storage and efficient,
just-in-time delivery
Space for new nature
At our location in Wissel, we are creating space for new nature. During extraction, the foundations are laid for the development of new nature. The area provides space for the growth of diverse, native plant species, which in turn attract insects and birds. In this way, over the years, the landscape is transformed into a nature reserve with greater biodiversity, offering local residents and visitors the opportunity to experience it.
The Kieslehrpfad offers plenty of recreational enjoyment
Next to our location Kieswerk Wissel, alongside the Wisseler See and the Wisseler Dünen nature reserve, we created a beautiful cycling and walking path in 2021: the Kieslehrpfad. Over a distance of more than two kilometres, visitors and local residents can enjoy nature and the views over the water. There are information boards with rest areas at three points along the route. These provide information on how the area came into being, the current situation and the future. The Kieslehrpfad was developed in collaboration with the City of Kalkar and implemented by Kieswerk Wissel GmbH, part of the Putman Groep.
Wisseler Dünen Viewing Tower - Kalkar
To mark our 100th anniversary, we donated a viewing tower to the Kalkar area in Germany, offering panoramic views of the Wisseler Dünen. As a family business, we are familiar with this rare inland dune area — situated 20 metres above sea level and home to unique flora and fauna — thanks to our adjacent sand and gravel extraction operations. The tower was built in collaboration with the City of Kalkar and the Naturschutzzentrum im Kreis Kleve e.V. This allows local residents to enjoy the view of their unique landscape, which we too have cherished for generations.
