Harrison Schmitt was likely to be the first scientist to the Moon on Apollo 18 or 19, with Don L. Lind the second. On January 4, 1970, NASA announced the cancellation of Apollo 20 so that its Saturn V could be used to launch the Skylab space station as a "dry workshop" (assembled on the ground), instead of constructing it as a "wet workshop" from a spent S-IVB upper stage of a Saturn IB launch vehicle. Also, budget restrictions had limited the Saturn V production to the original 15. After NASA Deputy Administrator George M. Low announced that the final three Moon landings were rescheduled for 1973 and 1974, following the three planned Skylab missions, Chief Astronaut Deke Slayton moved Lind to Apollo Applications, stating that "with the cancellation of 20, I could see I just wasn't going to have a flight for him".