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Workers use rotators to break rocks in an iron mine in New York, United States.
The various types of drills and bits used for drilling into rocks in the United States. An iron mine in northern New York. Men work on rocks in 40 to 100 feet deep mines. Rotators or automatic hammers being used to cut into rocks by a man. The rotators being operated by a hand as they drill into an ore bench in a mine. A man operates a hand rotator to break a large rock fragment.
Workers drill holes and extract iron ore in a mine in New York, United States.
The various types of drills and bits used for drilling into rocks in the United States. An iron mine in northern New York. Men in a mine use a heavy hammer drill to dig out holes in rocks. A workers fills explosives in the holes. Fuses of the explosives being lit up. The extracted ore being transported in cars. A Corliss hoist in operation.