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    Earth defense web sites related to Vulcan, Comets and the Impending Catastrophe.

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  • Glossary of nautical termsWikipedia

    This is a partial glossary of nautical terms; some remain current, while many date from the 17th to 19th centuries.See also Wiktionary's nautical terms, Category:Nautical terms, and Nautical metaphors in English.See the Further reading section for additional words and references.

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  • Glossary of Mining Terms

    Face The exposed area of a coal bed from which coal is being extracted. Face cleatThe principal cleavage plane or joint at right angles to the stratification of the coal seam. Face conveyorAny conveyor used parallel to a working face which delivers coal into another conveyor or into a car. Factor of safetyThe ratio of the ultimate breaking strength of the material to the

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  • Moving walkwayWikipedia

    A moving walkway, also known as an autowalk, moving sidewalk, moving pavement, travolator, or travelator, is a slowmoving conveyor mechanism that transports people across a horizontal or inclined plane over a short to medium distance. Moving walkways can be used by standing or walking on them. They are often installed in pairs, one for each direction

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  • Ask the Physicist!

    QUESTION: I have something I have been wondering about.maybe you can answer. I recently drank a glass bottle of rootbeer and then set the empty bottle on the hood of

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  • Chapter 74

    SURFACE COAL MINING MANAGEMENT. Paul Westcott. The geological characteristics of surface coal mining which distinguish it from other surface mining are the nature of formation and its relatively low value, which often require surface coal mines to move large volumes of overburden over a large area i.e., it has a high stripping ratio.

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  • Rebuilding a Firewood ProcessorBeckmannAG

    Hauled this in from Brookline, NH. No trailer brakes Seemed like a good idea at the time, and most of the parts were there to get something up and running..

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  • Glossary of Mining TermsCoal Education

    A. AbutmentIn coal mining, 1 the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and 2 the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled packs behind the face.

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  • SME Annual Conference & Expo

    The 2019 SME Annual Conference & Expo and CMA 121st National Western Mining Conference is proud to present technical sessions hosted by some of the

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