source: [lemma=estimate] □
destination: [lemma=estimate] □ □
spec: The diffusion indexes for private nonfarm payroll employment are based on estimates for 278 industries , while the manufacturing indexes are based on estimates for 84 industries . The cave has two entrances : an upper one located on the Preserve , and Great Exit , a small , lower entrance approximately four miles down Trapper Canyon from the upper entrance , on land managed by the U.S. Bureau of Land Management .