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RQD: Rock Quality Designation & What Your Core Is Telling You
How to calculate RQD from drill core, what the classifications mean, limitations of the method, and how RQD feeds into rock mass classification systems like RMR and Q-system.
Darcy's Law: How Groundwater Actually Moves Through Rock and Soil
The fundamentals of Darcy's Law, hydraulic conductivity, seepage velocity vs Darcy velocity, and practical applications in dewatering, contamination, and aquifer testing.
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