The authors describe their ongoing research on slush production with a facility comprising a small vacuum-insulated cylinder, a vacuum system, a heat exchanger using liquid helium as a refrigerant, and an auger for scraping. The objective of the experiments is to develop a technology for slush hydrogen production by means of the auger method. In the experiments so far conducted with the aforementioned facility during the production of slush hydrogen, a decrease in capacity and locking of the auger, a critical problem, often occurred. In order to establish the cause of the auger locking, the authors conducted another experiment on slush production using nitrogen instead of hydrogen. During this experiment, the auger driving mechanism was closely examined and improvements were made in the specifications of the facility and in the operation. As a result, auger locking was satisfactorily controlled and the authors are thus confident of having opened up a way to realize continuous production of large quantities of slush hydrogen.