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Direction and draft of drilling operations is determined by a camera enclosed in a tube with a compass, lighting facilities and timing device, which is sent to bottom of hole. Oil well, Kilgore, Texas by Russell Lee
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Direction and draft of drilling operations is determined by a camera enclosed in a tube with a compass, lighting facilities and timing device, which is sent to bottom of hole. Oil well, Kilgore, Texas by Russell Lee

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Direction and draft of drilling operations is determined by a camera enclosed in a tube with a compass, lighting facilities and timing device, which is sent to bottom of hole. Oil well, Kilgore, Texas by Russell Lee

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