drilling by flame
11Petroleum — For other uses, see Petroleum (disambiguation). Proven world oil reserves, 2009 …
12petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …
13Metalworking — Machining a bar of metal on a lathe. Metalworking is the process of working with metals to create individual parts, assemblies, or large scale structures. The term covers a wide range of work from large ships and bridges to precise engine parts… …
14Lathe — A lathe (pronEng|ˈleɪð) is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has… …
15Case hardening — or surface hardening is the process of hardening the surface of a metal, often a low carbon steel, by infusing elements into the material s surface, forming a thin layer of a harder alloy. Case hardening is usually done after the part in question …
16List of Transformers: Cybertron characters — Principal cast from Transformers: Cybertron. This article lists characters that appear in Transformers: Cybertron, the third chapter of the Unicron Trilogy series of the Transformers franchise. The series features the entirety of planet Cybertron …
17Marcellus Formation — Stratigraphic range: Middle Devonian …
18tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
19T-34 variants — Infobox Weapon name= T 34 variants caption= T 34 family portrait, 1941 (BT 8, A 20, T 34 Models 1940 and 1941) origin= Soviet Union type= Medium tank is vehicle= yes is UK= yes service= 1940–96 production date= 1940–56 number= about 84,070The T… …
20Petroleum industry in Azerbaijan — Onshore oil fields in Azerbaijan. Offshore oil fields in Azerbaijan …
