Break the group into two teams for the exercise, each consisting of a pair of surveyors and gravimeter teams. From a central base station on the survey line, send teams out along opposite traverses. Survey teams plant flags at 100m spacing using laser rangefinders, and record locations using topographic base maps, air photos, and GPs units. The Gravity team follows behind, recording gravity meter reading and time at each flag. Halfway through the exercise, survey and gravity teams switch tasks.
Geophysicists process the gravity data that evening.