Word: moisten
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Dates: during 1933-1933
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...keep the sound-tight rooms from being stuffy, NBC installed an air-conditioning plant consisting of 64 independent units. In an hour these machines suck in 20,000,000 cu. ft. of Manhattan air, dry or moisten it, warm or cool it as required, feed it through the studios so fast that a complete change of air is effected every eight minutes...