electric-arc drilling
11Synthetic diamond — Synthetic diamonds of various colors grown by the high pressure high temperature technique Synthetic diamond is diamond produced in a technological process; as opposed to natural diamond, which is created in geological processes. Synthetic… …
12copper processing — Introduction use of smelting or leaching, usually followed by electrolytic refining or recovery, 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 copper and of its… …
13Mobarakeh Steel Company — Mobarakeh Steel Type Public Industry Steelmaking Founded 1993 Headquarters …
14Space habitat — A pair of O Neill cylinders …
15Laser ablation — is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates. At high laser flux, the… …
16Chromium — This article is about the chemical element. For other uses, see Chromium (disambiguation). vanadium ← chromium → manganese ↑ Cr ↓ Mo …
17Metals conservation — The bronze apoxyomenos, ,dated between 1st and 2nd century BC,found and recovered from Adriatic sea near small island Vele Oryule,near island Loshiny, example of archaeological metals conservation, Croatia Metals conservation, or more precisely… …
18Main Street Historic District (Danbury, Connecticut) — Main Street Historic District U.S. National Register of Historic Places U.S. Historic district …
19strike — verb (past and past participle struck strʌk) 1》 deliver a blow to. ↘accidentally hit (a part of one s body) against something. ↘come into forcible contact with. ↘(in sporting contexts) hit or kick (a ball). ↘ignite (a match) by… …
20mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
