In 1981 we conducted an extensive, low-latitutde, HI 21-cm absorption survey from the VLA. The goal of the survey was to answer the following questions:
(a) What is the vertical distribution of the cold HI clouds?
(b) Do HI clouds get systematically warmer at high |z|?
(c) Does the fraction of warm intercloud medium HI increase with high |z|?
(d) How much HI has been missed in previous HI emission surveys because of optical depth effects?
(e) What is the galactic distribution of cool HI clouds?