Reb Efraim Wolf, as administrator of Tomchei Temimim and as head of the umbrella Chabad organization in Eretz Yisroel, served as the de facto representative of the Rebbe in Eretz Yisroel.
When he would come to New York, Reb Efraim would have a Yechidus, which would often go on for an hour and a half, covering many issues facing Chabad in Israel. The Rebbe gave him permission to record these audiences as it would be impossible for him to remember everything the Rebbe said during the Yechidus. For this reason, his Yechidus was usually scheduled as the last one of the night, so as not to hold anyone up.
He was in constant communication with the Rebbe, and would have phone calls with Rabbi Chodakov, the Rebbe’s senior mazkir, several times a week.
However, due to the time difference between Eretz Yisroel and the US, it was often not possible to get through to Mazkirus office.
“What should I do if a decision had to be made which is time sensitive?” Reb Efraim once asked the Rebbe.
“Study a blatt Gemara,” the Rebbe answered, “and Hashem will help you come to the right conclusion.”