In July of 1968, the USGS Branch of Surface Planetary Exploration added a second crater field to their training grounds at Cinder Lake. The endeavor used 1,153 pounds of dynamite, 28,650 pounds of ammonium nitrate fertilizer, and 40,000 feet of detonation cord. Before detonating, one team member, Norman “Red” Bailey apparently rented a “burner” to burn off the plants from the field. The following January, the geologists added extra realism and teaching opportunities for astronauts by “salting” the crater field with additional rocks