Stiftelsen Modums Blaafarveværk

Blaafarveværket, or the Blue Colour Works, was a mining and industrial company located at Åmot in Modum in Buskerud, Norway, which existed from 1776 to 1898. The works mined cobalt ore and manufactured by smelting blue cobalt glass (smalt) and cobalt blue (cobalt aluminate) pigment. It is currently a large open-air industrial museum and an art gallery.