| http://www.w3.org/ns/prov#value | - The pressure-representing electrical signals are transmitted through a cable 7 (e.g., a coaxial cable, conduit, or other transmitting means) that extends within an annular space 8 (typically filled with fluid) past the tool assembly 2 to a data recorder 9 or other upper signal-handling means located above the tool assembly, e.g., at or near the ground surface G. In other embodiments, the lower or
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