re: Sad news --- Oklahoma rig explosion leaves 5 missing

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I'm not really well versed on drilling rigs but it seems that automatic sensors could be made to help monitor this type of thing that would trigger an alarm or automatic shutdo

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most modern rigs do have what you speak of - problem is that you still need human eyes on it - it's too important. Mud/fluid can do funny things to the technology monitor/sensors in really small volumes.