The rare occurrence of condensate-carbon dioxide accumulations is probably the principal reason the North McCallum field has received the attention and publicity not normally given fields of comparable size. In several unpublished accounts found in some early interbureau reports of the Bureau of Mines, United States Department of the Interior, pictures of the wells and producing facilities show flowlines, fittings and storage tanks covered with frost up to several inches thick. The problem of freezing attending production of this fluid and the lack of knowledge concerning the status of the original reservoir fluid and its probable behavior with reservoir pressure decline also have attracted considerable attention to this unique occurrence in North Park Basin. If ever a nickname for an area was appropriate, that of "ice cream wells" by which this area has been called, is especially apt.