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31 00 00 Earthwork
31 01 00 Maintenance of Earthwork 31 05 00 Common Work Results for Earthwork 31 06 00 Schedules for Earthwork 31 08 00 Commissioning of Earthwork 31 09 00 Geotechnical Instrumentation and Monitoring of Earthwork 31 10 00 Site Clearing 31 20 00 Earth Moving 31 30 00 Earthwork Methods 31 40 00 Shoring and Underpinning 31 50 00 Excavation Support and Protection 31 60 00 Special Foundations and Load-Bearing Elements 31 70 00 Tunneling and Mining