The most interesting product is Kubik Heavy Concrete: this concrete is obtained by a mix of aggregates coming from excavation made in LKAB iron mines in northern Sweden. Therefore they obtain an aggregate reach in ferrite, a ceramic compound consisting of a mixed oxide of iron and one or more other metals. Ferrite has ferromagnetic properties and is used in high-frequency electrical components such as antennas. With the mix they obtained a patent for the production of high performance concrete optimal for the production of wall elements that withstands radiation from X-ray machines and from nuclear waste.