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{{#category_index:C|catcher}} 1. A device to prevent cap wires from being blown out of the hole by the shot and endangering personnel by making contact with high-voltage power lines. 2. A device to catch a Dinoseis gas gun before it falls back to the ground after an explosion, thus preventing a second sharp impact that would complicate the waveform. 3. A device used to retain a core in a core barrel.