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Vietnam Coal And Mineral Industries Group Cut Coal Export Tax Proposal Was Criticized Quarry Crusher

Jun 06, 2005 Industry trade associations and individual mine operators recommended that MSHA repeal the final limit based on issues related to health effects, inability of the mining industry to meet a lower limit than 400 micrograms per cubic meter of air, and the need for MSHA to have the results from the National Institute for Occupational Safety and

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