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Measures for Progress: A History of the National Bureau of Standards

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Above, <strong>the</strong> NBS small-scale experimental paper mill in which all <strong>the</strong> operations <strong>of</strong> paper-<br />

making could be studied under controlled conditions. Below, <strong>the</strong> rotary cement kiln<br />

at <strong>the</strong> Pittsburgh laboratory, brought to Washington in 1918, <strong>for</strong> determining <strong>the</strong> effects<br />

<strong>of</strong> various processes in <strong>the</strong> manufacture <strong>of</strong> cements.<br />

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