Iridium alloy was used in the construction of the De-mat Gun, which was built by Rodan and K9 Mark I by order of the Fourth Doctor and powered by the Great Key of Rassilon. (TV: The Invasion of Time)
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Iridium alloy was used in the construction of the De-mat Gun, which was built by Rodan and K9 Mark I by order of the Fourth Doctor and powered by the Great Key of Rassilon. (TV: The Invasion of Time)