Coal miners will get long wanted protection from dust that causes black lung

The final rule, announced by Acting Labor Secretary Julie Su, cuts by half the permissible exposure limit for crystalline silica for an eight-hour shift.

Coal miners will get long wanted protection from dust that causes black lung
The final rule, announced by Acting Labor Secretary Julie Su, cuts by half the permissible exposure limit for crystalline silica for an eight-hour shift. Read More

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