Werra-Kalibergbau-Museum (WKM) is the museum in Germany.
According to PR-model, kalimuseum.de is ranked 132,419th in multilingual Wikipedia, in particular this website is ranked 10,566th in German Wikipedia.
The website is placed before themelis-cuiper.com and after beaux-arts.ca in the BestRef global ranking of the most important sources of Wikipedia.