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Perforated casing and screen pipe in oil wells

Mechanical safeguards in rotary drilling

Safe practices at oil derricks

Published Year

• 1920-1929 (3) *

Subject

• Oil well drilling (3) *
• Drilling and boring (1)
• Machinery--Safety appliances (1)

Author

• Miller, Harold Carl, (2)
• Wagy, Earl W. (1)

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