TY - RPRT TI - Change in the magnetic properties of bituminous coal intruded by an igneous dike, Dutch Creek Mine, Pitkin County, Colorado AU - A. N. Thorpe AU - F. E. Senftle AU - R. B. Finkelman AU - F.T. Dulong AU - N. H. Bostick PY - 1998 DO - 10.1016/s0166-5162(98)00006-8 UR - https://pubs.usgs.gov/publication/70020843 ID - 70020843 ER -