A detachable sling swivel capable of withstanding substantial pull forces includes a loop joined to a mounting body that detachably engages a sling swivel stud or other similar mounting device. In a crucible, a seed crystal substrate is placed such that one end of the substrate remains on the support base, whereby the seed crystal substrate remains tilted with respect to the bottom surface of the crucible, and gallium solid and germanium solid are placed in the space between the seed crystal substrate and the bottom surface of the crucible. The first information for the at least one channel status report comprises information for a period and an offset, and a difference between the first subframe and the second subframe is a smallest value greater than or equal to a predetermined value. Further, conical dimples provide a unique dimple cross-section which is visually distinct.