The article focuses on the copper projects and the development of flotation cells. It evaluates the Series 600 SuperCell commissioned by FLSmidth, TankCell e500 commissioned by Outotec Oyj, and a stage flotation reactor (SFR) from Woodgrove Technologies Inc. The Series 600 SuperCell is installed at KGHM's Robinson Mine, TankCell e500 is installed at Boliden's Kevitsa Mine, and the SFR is installed at New Afton Mine.