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Double-drum winch

B - Operations – Transporting – 66 – D
Patent

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Drawworks

B - Operations – Transporting – 66 – D
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Drawworks

B - Operations – Transporting – 66 – D
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Drive assembly

B - Operations – Transporting – 66 – D
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Drive assembly and apparatus for hoist

B - Operations – Transporting – 66 – D
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Drive for mine friction hoist

B - Operations – Transporting – 66 – D
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Drive mechanism for cable drums

B - Operations – Transporting – 66 – D
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Drive system for yarder used in double main line logging

B - Operations – Transporting – 66 – D
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Driving machine for lifts

B - Operations – Transporting – 66 – D
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Drum for receiving a rope

B - Operations – Transporting – 66 – D
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Drum hoist

B - Operations – Transporting – 66 – D
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Drum pulley

B - Operations – Transporting – 66 – D
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Drum spar

B - Operations – Transporting – 66 – D
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Drum winches

B - Operations – Transporting – 66 – D
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Dual capstan puller and method

B - Operations – Transporting – 66 – D
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Dual drive system for dragline with power interlock

B - Operations – Transporting – 66 – D
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Dual-drive winch system adapted for well logging applications

B - Operations – Transporting – 66 – D
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Dump block for dragline bucket

B - Operations – Transporting – 66 – D
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