2. what was mud used for in the oil drilling rig?

In geotechnical engineering, drilling fluid, also called drilling mud, is used to aid the drilling of boreholes into the earth.

Explanation:

Often used while drilling oil and natural gas wells and on exploration drilling rigs, drilling fluids are also used for much simpler boreholes, such as water wells.

your answer is: a passage or quotation taken or selected from a religious book example: the bible, torah, and the quran.

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