Ultrasound works magicOne tool that South Dakota beef producers Blane and Cindy Nagel milltableforadrillpress can''t do without milltableforadrillpress is an ultrasound machine. All heifers on their 300-head Maine-Anjou herd are scanned each May and then bred according to their muscle scores and marbling levels. Ultrasound data for all sale bulls is milltableforadrillpress provided to potential buyers. "As a breeder, I use it as a mating tool," says Blane, who farms near Springfield. "The buyers of my bulls use it as a selection tool." Nagel pays most attention to the marbling around the ribeye area. His cattle naturally muscle well, so he is looking for those who are also heavily marbled.

Drilling--785.3 cu m; Potable Water--245.6 cu m.DRILLING EQUIPMENT Drawworks--Nat''l 1320UE;Pumps--two Nat''l 10-P-130; Prime movers--fourCat D399; Rotary Table--Nat''l C-375.DERRICK: Pyramid 147''; 1,392,000 milltableforadrillpress lb.BOP SYSTEM: 10,000 psi.CRANES: Two Nat''l OS-105.MOORING: Two sets, 1,000 lb.WORK AREA: Nanhai sea, China.BOHAI NO. 8RIG DESIGN: Marathon LeToumeau; 82-SD. Converted to cantileverCONSTRUCTION: Marathon LeTourneau, Singapore, 1980.PERFORMANCE: Water depth--250''; Drilling depth--20,000''.QUARTERS: 102 persons.

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