A bottom hole assembly in a casing-while-drilling operation is retrieved by reducing the density of the fluid in the casing string above the bottom hole assembly, creating an upward force on the bottom hole assembly. The system uses the Compton double scatter technique with recoil electron tracking. The proxy interface displays current or default settings for a task of that application. The summer is electrically coupled to the amplification circuit for providing the summed signal to the amplification circuitry. At least one sensor is located in the liquid capture zone for detecting presence of liquid in the liquid capture zone. An article of manufacture having at least two different flexible substrates coated at least in part with such a coating is also disclosed.