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Tunnel boring machine
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Komatsu Ltd.
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Mine management system
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Komatsu Ltd.
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Mine mining system
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Komatsu Ltd.
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Komatsu Ltd.
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Komatsu Ltd.
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Komatsu Ltd.
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Tunnel excavation method
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Komatsu Ltd.
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Magnetic recording medium
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Dainippon Ink and Chemicals, Inc.
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Yoshikazu Yamazaki
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