AZ ROC C-53 Water Well Drilling Practice Questions - Arizona ROC C-53 Water Well Drilling Examination Exam

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Which Marsh funnel discharge time represents a standard, well-conditioned bentonite drilling mud for drilling through loose sand and gravel formations?

15 to 20 seconds 26 seconds 28 to 30 seconds 38 to 45 seconds

Correct Answer:

38 to 45 seconds

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