Word: dusts
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Dates: during 1960-1969
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...contain lead or cadmium was excluded; the principal exception to the no-metal rule was stainless steel for the cages that contained experimental rats and mice. Water pipes, where possible, were made of plastic. The pure mountain air was electrostatically filtered. Visitors were barred because they might carry metalliferous dust; even research-staff members had to take their shoes off before entering the animal rooms. The animals were fed a diet with a meticulously defined metallic content, and their pure drinking water was superpurified. Whether it was hard or soft depended on how the investigators treated...
...five foot square chunk of the ceiling of Sever 36 fell in on Professor Raoul Bott's Math 11 class yesterday morning upsetting a wastebasket, a chair, and a desk and covering students in the front row with dust...
Bott observed the falling plaster non-chalantly, waited for the dust to dissipate, and resumed his discussion of the chain rule. He suggested that students pay no attention to the several large cracks in the ceiling...
...total amount of University dirt, to put the matter in terms the bureaucrats will understand, would be dramatically reduced. At the very least, the freshman would be required to pick up the old newspapers, clothes, and towels now scattered around the rooms to let the vacuumers get at the dust underneath...
...open-housing issue got Mahoney the attention he wanted. By the time of the election, Finan and Sickles had battered each other so badly that Mahoney emerged from the dust as the winner. The reason so many people were surprised was that no one wanted to admit Mahoney had a chance. But he did, and he did from the beginning. Open-housing was merely the clincher. Many Baltimore workers in the huge plants of Dundalk and Sparrows Point abandoned Finan when Mahoney forced him to take a stand...