Bureau of Labor Statistics. Overview: The Bureau of Labor Statistics (BLS) is one of eight specialized divisions within the Department of Labor, and a direct descendent of the original Bureau of Labor, Department of the Interior, established in 1884. (Todayâs Department of Labor was established as a cabinet-level agency in 1913).
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Freezing, or solidification, is a phase transition in which a liquid turns into a solid when its temperature is lowered below its freezing point. For most substances, the melting and freezing points are the same temperature; however, certain substances possess differing solidâliquid transition temperatures.his is a first-order thermodynamic phase transition, which means that, as long as solid and liquid coexist, the temperature of the whole system remains very nearly equal to the melting point due to slow removal of heat when in contact with air, which is a poor heat conductor.