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JP2000291370A
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Method and device for sampling, ground sampling bit, and core lifter case
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JPH11173054A
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Sampler for exploration of ground
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JPH10238267A
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Ground excavating bit
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Rigid film foam type excavation method
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JPH06146253A
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Method of protecting wall of drilled hole
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Method of setting bottom of drilled hole
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JPH06137057A
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Sampler for ground exploration
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Pneumatic excavation method
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Bubble generation method and device thereof
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JPH01182734A
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Apparatus for testing water permeability
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JPH01182735A
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Apparatus for testing water permeability
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Removing anchor
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JPS63261094A
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Drill for anchor of inclined ground
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JPS63161221A
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Method and apparatus for cutting existing anchor trunk
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JPS63161220A
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Cutting of existing anchor trunk
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JPS63147088A
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Method of underground propulsion construction of buried pipe
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JPS6259720A
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Removal of anchor tension member
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JPS62244918A
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Temporary embedding body for removing anchor
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JPS62141219A
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Treatment work for sludge and its apparatus
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JPS62141222A
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Method and apparatus for bottom-expanded pile work
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