The footprint of the new Mark O. Hatfield Clinical Research Center is becoming more apparent as work progresses on the site of NIH's future hospital. Above, a drilling rig bores a caisson in the foreground, as the base of tower crane #1 looms at right. Three more cranes will be erected in coming months. The squares in the background surround caissons that will support the weight of the building. Below, the footprint of the western side of the CRC is emerging from the dirt. At upper left, the new building utility tunnel creeps into view. At lower left, the two square cyclotron chambers in front of Bldg. 10 have been exposed; beams will span over them to protect access to their top hatches, and thick concrete will shield the CRC from radiation.