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Vein (geology) White veins in dark rock at Imperia, Italy. In geology, a vein is a distinct sheetlike body of crystallized minerals within a rock. Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation. The hydraulic flow involved is usually due to hydrothermal circulation. [1]
Coal mining. Coal mining is the process of extracting coal from the ground or from a mine. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.
Hazel Miner. Courtesy: Center County Republican. / 47.114491; -101.299806. Hazel Dulcie Miner (April 11, 1904 – March 16, 1920) was a student at a rural Great Plains one-room school, who died while protecting her 10-year-old brother, Emmet, and 8-year-old sister, Myrdith, from the spring blizzard of 1920 in Center, North Dakota.
A leaf miner is any one of numerous species of insects in which the larval stage lives in, and eats, the leaf tissue of plants. The vast majority of leaf-mining insects are moths ( Lepidoptera ), sawflies ( Symphyta, the mother clade of wasps ), and flies ( Diptera ). Some beetles also exhibit this behavior. Like woodboring beetles, leaf miners ...
Freeminer. The "Freeminer Brass", a symbol of the Freeminers' authority above the Crown. Freeminer is an ancient title given to coal or iron miners in the Forest of Dean, Gloucestershire, England, who have earned the right to mine personal plots, known as gales .
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The inferior gluteal veins are venae comitantes of the inferior gluteal artery. They commence in the superior/proximal posterior thigh. They enter the pelvis through the lower part of the greater sciatic foramen. They converge to form a single vessel before emptying into the distal portion of the internal iliac vein. [1]