Technology is disclosed herein for licensing applications using a preferred authorization process dynamically identified based on conditions associated with an initiation of an application. The method comprises: a sheet fixing step of fixing a sheet to be locally surface-modified; and a local surface modification step comprising adhering a probe closely to a region of the fixed sheet, which is in need of surface modification, by the application of pressure, and then rotationally moving the probe on the region at high speed. The vertical elevator may have a drive motor, e. A plurality of cords are interposed at the interface between the toothed rubber layer and the back rubber layer. A sensor is also provided on the body, for tracking the number of objects such as vehicles, passing over it. This assembly is easy to install, does not have to be tightened during longwall operation of an ore panel, and is also demountable when it is time to stop the longwall mining operation and time to removereplace the ranging arm for maintenance andor when the end of the ore panel is reached.