When they wander outside the burrow entrance, draglines of silk are usually left on the soil surface. |
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Huge shovels pulled by draglines scoop the topaz-laden clay from the low-angled sides of the open pit, dumping it into washing pits at the top. |
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He came to the field in 1949 from Poland and worked on both tractors and draglines. |
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While running and walking around the female produced draglines, which are essential stimuli for the male in search for a mate. |
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The company plans to retire its bucketwheels and draglines soon. |
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Mining at this scale requires the use of draglines, trucks, conveyors, hydraulic jacks and shearers. |
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Bear Run will be the largest coal mine in the eastern United States, initially operating two draglines to move rock and reveal coal seams. |
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Wear's products include unique designs in longwall face conveyors and flight bars as well as patented quick-change bucket teeth for draglines and excavators. |
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By 1920, the use of draglines and other modern equipment made strip mining possible and the privately owned Grand Lake area mines produced over 200,000 tons per year. |
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The overburden is then removed by draglines or by shovel and truck. |
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