Quarries: Resource efficiency
Our quarries place the outmost importance and have policies and measures in place to protect the environment, reduce greenhouse gases, to ensure the quality of our products, and the safety and satisfaction of our employees and local community.
As an example, the quarries have since their inception in the early 1980’s run on 100% hydroelectric power.
We work on continuous improvements in production processes to increase efficiency and productivity. e.g. by optimising the drives in the conveyor belts, rock crushers and screening machines.
We collect rainwater in for use as in the manufacturing process and as for firefighting.
It is a target of the quarries to have 100% sale of the products produced, including rock fines.
Where products need to be washed before shipment, collected rainwater is used. The resulting slurry is conveyed to back to the settling basin where the water is recycled for further use in the manufacturing process.
We cooperate with renowned universities and engineering companies to find use for 100% of the products produced. In doing so, we fund research and develop innovative concepts. Some of the key findings over the last 10 years
- Use of a single-layer scour protection system
- Reduction of the layer thickness of a subbase when using Jelsa 0/32mm compared to conventional base course materials
- Use of high-filler aggregates in concrete and allowing for, significant savings on cement and reduced CO2 of the finished product.
As part of our waste management system, we register and sort all waste before it is processed further for approved treatment.
We are working intensively to improve efficiency on our fleet of Heavy Machinery (e.g. biodiesel, autonomous wheel loaders, electrification, process optimisation).