Soils Appendix
https://www.blm.gov/style/medialib/blm/wy/information/NEPA/wfodocs/westside/feis.Par.75959.File.dat/app-c.pdf

Bureau of Land Management: Montana State Office


This 14-page PDF is part of the final statewide oil and gas environmental impact statement and proposed amendment of the Powder River and Billings Resource Management Plans. This section features a soils appendix for the Crow Reservation. Included are tables illustrating the areal extent of soil map units and soil series characteristics for the Powder River and Billings area, as well as soils maps for this area.

This resource is referenced here:
Subject: Environmental Science:Soils and Agriculture, Geoscience:Soils
Resource Type: Scientific Resources:Overview/Reference Work
Theme: Teach the Earth:Course Topics:Soil, Environmental Science