A tamper-evident retaining device for use with articles of evidence having a base sheet and a secondary sheet connected along conjoined bottoms. The methods involve preparing a reactant mixture comprising calcium oxide and phosphorus pentoxide in a mole percent ratio that allows the mixture to form tricalcium phosphate upon combustion thereof, forming this mixture into a desired final shape in a die with compression, and carrying out a combustion synthesis therewith. Flat wire cable is wound on the dual-purpose shaft in both compartments, and extends through two apertures in the walls of the compartment. A resilient O-ring is seated in the groove prior to setting the wheel center within the wheel rim. The operation is repeated by the number of the devices to acquire the result of the check and a device causing the loop fault is specified based upon the result of the check. Models are simplified by passing bus signals through graphical objects representing functional entities, without degrouping the bus signal.