| 21. | The explosives were presumed assembled by a California company and hidden in barrels of oil drilling mud.
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| 22. | Furthermore, the ships have cargo tanks for of liquid drilling mud, of fuel, and of fresh water.
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| 23. | In 1968, an automated mixing system for drilling mud was developed by Halliburton, primarily for use offshore.
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| 24. | In 1931, Max B . Miller devised a drilling mud using a white clay as a weighting material.
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| 25. | During normal well drilling, drilling mud is pumped through the drill stem and out of the drill bit.
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| 26. | The drilling mud was followed by a large quantity of oil and gas at an increasing flow rate.
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| 27. | Starting in 1930 Dresser began acquiring companies that manufactured valves, heaters, pumps, engines and refractories, and drilling mud.
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| 28. | Lightweight drilling mud also contains air bubbles, which means it won't transmit shock waves like the old-style mud.
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| 29. | The resistivity log will detect penetration into salt, and early detection prevents salt damage to bentonite drilling mud.
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| 30. | "To avoid a blow-out we evened out the pressure by increasing the weight of drilling mud used, " said Sletten.
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