Ung direktør på Notodden: Kjemikeren, dr. Emil Collett (t.v.), fikk i første omgang et kortvarig engasjement i Hydro. Seinere i historien dukker han opp flere ganger, men for mange vil han være best kjent for å ha utviklet den næringsrike drikken Sana-Sol. (Foto: Hydro/NIA).
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