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A man stands in the mining shaft holding an instrument to test the gas levels in the mine.

1. Testing for Gas in a Pittsburgh Seam Coal Mine

2. Miners Riding Safety Man-Trip Cars in Jamison No. 9 Coal Mine

Two miners dust the side walls of Mine No. 207 for safety.

3. Rock Dusting for Safety at Consol Mine No. 207

Two miners dust the rocks at Consol Mine No. 207 for safety.

4. Rock Dusting at Consol. Mine No. 207