A textbook example of the usefulness of RTK-GPS: follow-up operations such as planting potatoes and later ridging.

Illustrated here are the two basic types of satellite-based earthmoving systems. The motor grader is equipped with a machine-control system, and the worker is carrying a Topcon Pocket 3D ...

MOULTRIE, Ga. -- Darrell Williams spent part of his childhood behind a mule, plowing the fields on his family's tobacco farm. "It was hot," he said. "I had to follow that plow and that mule. There was ...