When sampling from a stockpile without power equipment, how should the sampler divide the pile?

• A. Into thirds for maximum representation
• B. Into half to reduce contamination
• C. Into quarters to obtain samples
• D. Into numerous small sections randomly

Answer: (C)

When sampling from a stockpile without power equipment, dividing the pile into quarters is a method that enhances the likelihood of obtaining representative samples. This approach allows the sampler to systematically reduce the size of the material while ensuring that different parts of the stockpile are considered. By taking samples from different quarters, the strategy aids in capturing the variability of the material, which is important for accurate analysis.

Halving the pile or dividing it into thirds may not sufficiently represent the entire stockpile, as these methods might overlook variations within the material. Randomly selecting numerous small sections, although it may seem advantageous for randomness, could lead to sampling bias if not properly managed. In contrast, the quartering method provides a structured yet effective way to ensure that each sample reflects the overall characteristics of the stockpile more accurately. Thus, dividing the pile into quarters is the most effective method for obtaining reliable and representative samples in this context.