When I first read the preamble to the then new OSHA confined space standard, I was struck by an interesting paradox that appeared on page 4,487 of the Jan. 14, 1993, Federal Register. In one breath, ...
Mark D'Agostino, general manager and senior vice president for Hunter Industrial, said that the concept of HVLS fans is creating a large diameter fan that moves at relatively low speed yet circulates ...
Fans are often used to ventilate agricultural buildings. Adjoining rooms with connecting air paths through open doors or manure channels can operate as a single room with a common negative pressure.
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