In the MOMA experiment, 18 BB seismometers were deployed between permanent IRIS/GSN stations CCM (Catherdral Caves, MO) and HRV (Harvard, MA), providing a linear 20-station array spanning 1740 km. The goal of the experiment was to obtain new information about the structure of the core-mantle boundary, the structure of the crust and mantle beneath the eastern US (including mantle discontinuities, mantle anisotropy, and lateral velocity variations), and the structure of subduction lithospheric slabs.