(From the A.P. wire): Labor Secretary Hilda Solis said Tuesday that the government would soon propose new safety rules to protect workers from industrial dust that can cause explosions and a popcorn flavoring chemical linked to lung disease.

The announcement is part of her efforts to boost safety enforcement at the department's Occupational Safety and Health Administration. Solis made her remarks at a groundbreaking ceremony dedicating a national memorial in Silver Spring, Md., to workers who have died on the job.

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