Lyman, R.M.Volkmer, J.E.2024-03-142024-03-1410.15786/13690144https://wyoscholar.uwyo.edu/handle/internal/8646https://doi.org/10.15786/13690144Pyrophoricity (spontaneous combustion) of Powder River Basin coals–Considerations for coalbed methane developmenthttps://creativecommons.org/licenses/by/4.0/figure