silica refractory
31Pottery — Pot and Pots redirect here. For Pot, see Pot (disambiguation). For POTS, see POTS (disambiguation). Unfired green ware pottery on a traditional drying rack at Conner Prairie living history museum …
32Space Shuttle thermal protection system — The Space Shuttle thermal protection system (TPS) is the barrier that protects the Space Shuttle Orbiter during the searing 1650 °C (3000 °F) heat of atmospheric reentry. A secondary goal is to protect from the heat and cold of space while on… …
33Silicosis — Classification and external resources ICD 10 J62 ICD 9 502 …
34COSHH — The Control of Substances Hazardous to Health Regulations 2002 United Kingdom Parliament Citation: 2002 No. 2677 Primary legislation: European Communities Act 1972, Health and Safety at Work etc. Act 1974 Introduced by …
35iron processing — Introduction use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a… …
36tungsten processing — Introduction preparation of the ore for use in various products. Tungsten exhibits a body centred cubic (bcc) crystal lattice. It has the highest melting point of all metals, 3,410° C (6,170° F), and it has high conductivity for… …
37Silicon — Not to be confused with the silicon containing synthetic polymer silicone. aluminium ← silicon → phosphorus C ↑ Si ↓ Ge …
38Lost-wax casting — A model of an apple in wax …
39Seatearth — is a British coal mining term, which is used in the geological literature. As noted by Jackson (1997), a seatearth is the layer of sedimentary rock underlying a coal seam. Seatearths have also been called seat earth , seat rock , or seat stone in …
40sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …
