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  1. U.S. Limits Deadly Mining Dust as Black Lung Resurges

  2. New federal safety rules on silica dust aim to protect miners' lungs

  3. Toxic silica dust mining restrictions approved by Biden …

  4. Department of Labor issues final rule reducing silica dust exposure ...

  5. New federal safety rules on silica dust aim to protect miners' lungs

  6. US Sets New Limits on Miners’ Exposure to Toxic Silica Dust (1)

  7. Federal Mine Safety Regulators Finally Focus on Silica Dust – With ...

  8. Federal mine safety regulators finally focus on silica dust

  9. Coal miners have long faced risk of black lung disease. Now …

  10. US Department of Labor announces proposed rule to reduce silica dust