Liquid metal cooled reactor Clementine was the first liquid metal cooled nuclear reactor and used mercury coolant, thought to be the obvious choice since it is liquid at room temperature. However, because of disadvantages including high toxicity, high vapor pressure even at room temperature, low boiling point, producing noxious fumes when heated, relatively low thermal conductivity, and a high neutron cross-section, it has fallen out of favor. Sodium and NaK (a eutectic sodium-potassium alloy) do not corrode steel to any significant degree and are compatible with many nuclear fuels, allowing for a wide choice of structural materials. They do, however, ignite spontaneously on contact
XM Liquid Metal XM Liquid Metal XM Liquid Metal (or XMLM for short) was a channel on XM Satellite Radio channel 42. This XM Radio Channel is Uncensored and had an "xL" Marking, which Means it had Explicit Language. The channel played a variety of Hard Metal and Extreme Metal from yesterday and today. The channel has been with XM Radio since day one, and has gone through a few phases since. On November 12, 2008, as part of the Sirius XM Merger, XM Liquid Metal merged with Hard Attack to form Liquid Metal. XM Liquid Metal was part of the basic service