The miniature stockpile reduction method can be used for any combination of fine and coarse aggregates.

• A. True
• B. False
• C. Only for dry aggregates
• D. Not specified

Answer: (B)

The ability to obtain a representative sample during stockpile reduction depends on how the material behaves during handling. The miniature stockpile reduction method assumes that the material can be moved and mixed with minimal segregation and without dust loss or sticking, so the small sample mirrors the larger pile. When you have blends of fine and coarse aggregates, especially with varying moisture or cohesive fines, the reduction process can cause segregation or loss of fines, leading to a biased sample. Because material properties control whether the method stays representative, it isn’t reliable for every possible combination of fine and coarse aggregates. In such cases, different sampling practices or adjustments are needed to ensure accuracy, particularly if moisture, stickiness, or dust are present.