Dart packs the power of magnetic resonance logging into a highly portable, battery-powered system operable by a single user. With Dart, any small-diameter bore—no matter how remote—becomes an opportunity for a high-resolution hydrogeologic log. Dart is the world’s first and only hand-portable NMR logging tool, enabling single-person manual deployment to remote or environmentally sensitive locations, and eliminating the need for a multi-person crew or vehicle. Dart runs on batteries that last up to a full day of logging. A single user can transport and operate a Dart system, even in rough or challenging terrain.