Which of the following is NOT a recommended use for a grader?

The use of a grader is ideal for tasks that require precise surface grading and leveling. Grading roads, snow removal, and building ditches are common and recommended applications for graders, as they allow for fine adjustment of the surface and can create the necessary contours for drainage and maintenance.

Heavy excavation, however, falls outside the intended use of a grader. This machine is not designed to move large volumes of earth or handle heavy lifting like an excavator would. Instead, graders excel in shaping and finishing surfaces after the major earthmoving activities have been completed, allowing for fine grading to achieve a smooth and even surface. Thus, choosing heavy excavation as an activity for a grader is not advisable, as it does not align with the grader's capabilities and designed functions.