Aalborg Portland has a long-standing working relationship with Nordjyllandsværket power station. Chalk slurry produced by Aalborg Portland is used in the flue gas cleaning process and desulphurisation gypsum is a by-product of flue gas cleaning in power stations. A specially equipped lorry transports chalk slurry from the Aalborg plant to Nordjyllandsværket and returns with desulphurisation gypsum. The lorry is loaded both ways and can transport 30 tonnes on each journey. This partnership benefits both parties and society as a whole.