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[News Clip: Drilling]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: September 10, 1977
Duration: 1 minute 04 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

Hydraulic Swivel

Description: Patent for a hydraulic swivel made to control back pressure and designed to be resistant to wear. Illustrations included.
Date: December 10, 1907
Creator: Johnston, Horace G. & Norris, Joseph B.
Partner: UNT Libraries Government Documents Department

Casing Head

Description: Patent for a Case-Head. This case-head is used in oil wells. Its purpose is to ensure a tight seal around a pipe so that gas can flow properly through the tube.
Date: August 10, 1918
Creator: Kinzbach, Frank
Partner: UNT Libraries Government Documents Department
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