An energy storage device is provided that includes a cathodic material in electrical communication with a separator. A preferred embodiment uses a helical display of temporal attributes of patient health that allows a clinician to view not only a comprehensive representation of patient health, but also view fine-grain or customized representations of patent health data using commonly available techniques to manipulate the data points of the helical structure. The baseband impedance includes capacitors that form a low-Q band-stop filter. The system may also include an electric generator that is driven by the rotating body. The invention further involves the method of forming a roof bolting matrix in extremely hard rock formations having a compression strength up to about 50,000 psi using PCD wafers on a high tensile strength steel body coupled by a heavy duty shank through high fatigue-resistant reamer means to a high strength drive steel member.