Mr Callio with Business Concept in EIT RawMaterials and Digital networking event @Oulu #UniOulu #CallioPyhajarvi pic.twitter.com/6845aJwC2d

𝗧𝗮𝗹𝗶𝗸𝗼𝗱𝗴𝗲𝗻𝗶𝗰 😍 . . . #merchantmarine #seaway #lifeatsea #humanatsea #coolmariners #narval #callio instagram.com/p/B56fEVOlrHg/…

Thanks for the @BalticRegBSUIN scientists and developers about excellent discussions and ideas about deloping mine re-using. Brigth ideas @UniOulu @KitchenOulu #UniOulu_KSI and underground experiments and experiences @CallioLab @CallioPyhajarvi. pic.twitter.com/OOVJvLtPId

Interesting day @CallioPyhajarvi twitter.com/pumpedhydro/st…

The Demo project has been initiated. #CallioPyhajarvi #PumpedHydro #PyhasalmiMine #DemoPPHES pumpedhydro.se/post/pumped-hy…