William R. Jones worked for the U. S. Geological Survey, studying chromite deposits in Montana during the 1940's.
Source:
A. L. Howland, E. M. Garrels, W. R. Jones. (1949). “Chromite Deposits of Boulder River Area, Sweetgrass County, Montana.” U.S. Geological Survey Bulletin 948-C. Retrieved June 28, 2016 from http://pubs.usgs.gov/bul/0948c/report.pdf