Hand-cranked manual core drills may be used to obtain samples when power-driven drills are not available.

• A. False
• B. Not Stated
• C. True
• D. Not Applicable

Answer: (C)

When power-driven drills aren’t available, a hand-cranked manual core drill can still be used to obtain samples. This remains practical in the field because it allows continued sampling without depending on electricity or air, as long as the drill is appropriate for the material, yields a representative core, and keeps the sample intact. Manual operation is slower and requires careful technique, but it does not preclude obtaining valid samples; safety and core quality take precedence. Therefore, the statement is true. The other options imply it cannot be done or that the information is missing, which isn’t the case here.