heading
small tunnel driven horizontally or with a slight inclination from a shaft or into sloping ground to examine the ground conditions in situ, recover samples and carry out field testing
subjectOf
heading
small tunnel driven horizontally or with a slight inclination from a shaft or into sloping ground to examine the ground conditions in situ, recover samples and carry out field testing
type
partOfSpeech
description
small tunnel driven horizontal ...... es and carry out field testing
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