7:38 PM
RWWA
Finally found good sources on companies that struggled to get access to lime deposits. The Rheinisch Westfälisches Wirtschaftsarchiv in Cologne holds the records of Gutehoffnungshütte, a major steel-company in the Ruhr, and the lesser known company Matthes und Weber that specialized in the production of basic chemicals. To my surprise they also had a high demand for lime and even operated their own quarry in the 1920s.