The 10th joint meeting of the Space Resources Roundtable (SRR) and the Planetary & Terrestrial Mining Sciences Symposium (PTMSS) sponsored by Advanced Space, Honeybee Robotics, Teledyne Brown Engineering, Lockheed Martin, and Deltion Innovations was held in June 11-14, 2019 at the Colorado School of Mines.  On its 20th anniversary, the SRR had a record attendance of 186 participants with 74 technical presentations and 4 roundtable discussions on lunar, Martian, and asteroidal ISRU activities, as well as the latest economic models, legal and policy contributions, international participation, and private sector involvement in this field.