AASHTO T 225-16 (2020) covers a procedure for diamond core drilling designing for securing intact samples of rock and some soils which are too hard to sample by soil sampling methods. This method is primarily for obtaining data for foundation and slope design and similar civil engineering purposes rather than for mineral development and mining.
AASHTO T 225-16 (2020) history
AASHTO T 225-16 (2020)
Standard Method of Test for Diamond Core Drilling for Site Investigation
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