… in dyeing; as a flux in glass‑making to obtain vitrifiable mixtures (manufacture of bottle glass, crystal and optical … Explanatory Note to heading 38.08); for preparing spraying mixtures; to prepare cuprous oxide or inorganic copper … powder. Used in the preparation of pigments, mastics and mixtures for the rubber industry. Natural lead …
… ‑ Other (A) EARTH COLOURS, WHETHER OR NOT CALCINED OR MIXED TOGETHER; NATURAL MICACEOUS IRON OXIDES The colours … Verona earth and Cyprus earth (green). Calcination or the mixing together of various earth colours does not affect …
… This heading also covers drilling machines which employ a fixed tool to work a rotating article, or like machines … boring involves the use of free standing facing tools with fixed dimensions (borer drills, straight or helically‑fluted … vertical boring machines, horizontal boring machines (with fixed or moveable mounting), multiple boring machines, …
… of air, usually in gas works or coke ovens. It is a complex mixture of hydrogen, methane, carbon monoxide, etc., and is … gases, for example blast‑furnace gas. It also covers mixtures of gases formed by cracking or reforming of mineral …
