Long-term highwall stability in the northwestern Powder River basin, Wyoming and Montana
By: by William K. Smith.
Contributors: Geological Survey (U.S.)
Series: Open-file report -- 80-1229.; Open-file report (Geological Survey (U.S.)) -- 80-1229.
Publisher: U.S. Dept. of the Interior, Geological Survey
Published: 1980
Place of publication: [Denver, Colo.?]
Language: eng
Format: Microform
Subjects: Slopes (Soil mechanics) -- Powder River Valley (Wyo. and Mont.); Soil stabilization -- Powder River Valley (Wyo. and Mont.)
Notes: Microfiche. [Denver, Colo. : U.S. Geological Survey, 1980?]. 2 microfiches ; 11 x 15 cm.

Bibliography: leaves 103-106.