A card holder includes a first or front section having a front section wall, a front radius section joining the front section wall to a front top lip, and a compartment attached to the front section wall. In one implementation, a method may include receiving initial positions of an acoustic positioning source and an acoustic positioning receiver of an acoustic positioning system in a seismic spread. Thereafter, the method includes subjecting the droplets from about 10 to about 20 microns to a megasonic energy source to cause formation of a plurality of smaller droplets ranging from, for example, about 0. The integrated circuit includes an interface circuit, a received packets circuit, a buffer manager circuit for receiving data packets from the received packets circuit and transmitting data packets in one or more buffers and reading data packets from the one or more buffers. 0 interface, comprises a protruded end, an elongated portion and a first pin and mounts on the insulated housing. A remote control issues commands to the console to initiate or accept calls to the other communication system.