LKAB mines and processing plants as targets of sabotage

My question is about the possible targets of the allies or domestic resistance units.   Naturally the iron ore rail line with it's numerous tunnels and a bridge could be damaged but what about the mines and processing plants in Sweden?  Today there are pelletisation plants and other facilities to turn the mined iron ore into iron ore products that are more useful to the ultimate steel company customers.    Does anyone know what facilities existing near the two big Swedish LKAB mines in 1940?  

Thanks,

Jack in Fort Collins, CO.  USA