2011-02-182011-02-18http://hdl.handle.net/10605/1538Undated image of rig floor. Calf wheel and bailer are visible in the background. PBPM 79-039.040.01 Inscription (on back): Swabbing oil from Underwriters Producing & Refining Company's Zilpha Morrison Well No. 2 (well no. 1 was D&A). Note calf wheel and bailer line in background. The swab was attached to the wire line drilling cable, lowered into the oil in the hole (which entered and passed through swab as it was lowered, but the valve therein opened or closed depending upon whether swab was being lowered or raised. 10-31-79 This picture was furnished by H. P. "Cab" Slagel (Hall of Famer). L. J.1 print : print ; 5.25 x 3.25 in.en-USThe images in this collection are for study purposes, teaching, classroom projection and research only. To use these digital files in any form, an attribution of "Photo courtesy of The Petroleum Museum, Lee Jones, Jr. Collection" must accompany the image.Oil wells--Texas.Petroleum industry and trade--Texas--History--20th century--Photograph.Petroleum--Texas--Mitchell County.Underwriters Producing & Refining Company.Image