• : The said it was monitoring events in Vietnam closely, and urged restraint from all parties. Secretary of State , who is also a former , said the United States is "deeply concerned" that China has placed an oil rig in an area of the South China Sea also claimed by Vietnam, adding that the move was "provocative" and "aggressive".
[pdf] The rotating head can be defined as a rotating, low-pressure sealing device used in drilling operations to seal around the drill stem above the top of the blowout preventer stack. Rotating drilling heads are used to safely divert air, gas, dust, or drilling mud away from the rig floor.
[pdf] Cat Rotary Blasthole Drill Rigs offer substantial technology, efficiency and productivity improvements to efficiently reach your mining targeted productivity rates. Learn more about our mining drills here.
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