| http://www.w3.org/ns/prov#value | - to retrieve various completion devices from a pipe made of any material [0380] (f) it can have at least one sensor for measuring information downhole, and apparatus for transmitting that measured information to the Smart Shuttle or uphole, apparatus for receiving commands if necessary, and a battery or batteries or other suitable power source as may be required [0381] (g) it can be attached to, or
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