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In a meeting earlier this month with the National Stone, Sand & Gravel Association (NSSGA), Assistant Secretary of Labor for Mine Safety and Health Joseph A. Main updated NSSGA's board of directors on recent actions taken by the Mine Safety and Health Administration (MSHA) to improve miner safety and health.
The NSSGA represents companies that produce more than 90 percent of the crushed stone and 70 percent of the sand and gravel consumed annually in the United States.
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