To locate a buried conveyance, electromagnetic signaling information is collected at spaced intervals along the conveyance with the aid of a locating device. In another embodiment, the resilient floor tile comprises a decorative layer comprising a printed ink forming a decorative pattern disposed between a base and a protective film layer; wherein the decorative pattern extends over at least a portion of a contoured edge of the tile such that the decorative pattern is substantially undistorted. At the reception side, the received signal is fast Fourier transformed, the transmission path is estimated by the transmission path estimation method selected at the transmission side, the received signal is corrected in accordance with the result, and the received data is reproduced in accordance with the modulation method. Actuation of the tissue removal assembly removes occlusive material in the body lumen. This bearing permits an accurate detection of its temperature.