Hecla has received approval from MSHA to remove the loose material from the shaft, said Phillips S. Baker Jr.

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Food inspectors, air-traffic controllers, specialists who track down loose nuclear material wouldn't get their paychecks.

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Asphalt shingles ( the most common roofing material in the U.S.) can become loose, cracked, be blown off by the wind or be damaged by hail.

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