History of Tunneling in the United StatesMichael F. Roach, Colin A. Lawrence, David R. Klug, W. Brian Fulcher · First published 2017Open the Tome
North American Tunneling 2008 ProceedingsMichael F. Roach, Marc R. Kritzer, Dennie Ofiara, Bradford F. Townsend · First published 2008Open the Tome
