Geometallurgy combines the geologic sciences with extractive metallurgy and mining. The product is obtained after multistage purification and separation by extractive and azeotropic distillation. The work is a systematic, illustrated treatise on mining and extractive metallurgy. Zinc metal is produced using extractive metallurgy. Sodium fluoride has a variety of specialty chemical applications in synthesis and extractive metallurgy. Madagascar's other sources of growth are tourism, agriculture and the extractive industries. Economic 'development' based on the extractive industries carries difficult consequences for local communities. The forest was used by early settlers primarily for extractive industries. This indicates a division of the metallurgical production in the extractive and processing branches. It is a form of extractive metallurgy. They are used in both extractive metallurgy and metal joining. Pyrometallurgy is a branch of extractive metallurgy. In some senses, adding an entrainer is similar to extractive distillation. In the 19th century, extractive industries changed the landscape. Subsidence is a common issue with all forms of extractive industry.