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31 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