↑   Estimates differ around the world, but most sources give a figure of 2–4kg of bauxite for each 1kg of alumina. Crevice Corrosion: Takes place in confined spaces, like joints or overlaps, the place dampness can accumulate and stop working the oxide layer as time passes. Pitting in Saltwater Environments: Even https://shedsandgarages13345.dgbloggers.com/38001656/detailed-notes-on-sheds-and-garages