John D Duffy

Post Foundations for Flexible Rockfall Fences

Ryan Turner, John D Duffy, John P Turner, 2009 .

Analysis and Design of Wire Mesh/Cable Net Slope Protection

John D Duffy, Balasingam Muhunthan, Steve M Lowell, 2005 .

Method and apparatus for controlling a tool of a construction machine

John D Duffy, William E. Allen, Cynthia M Gardner, 1997 .

Foundations for the Bridge at Pitkins Curve

John D Duffy, Xing Zheng, John P Turner, 2012 .

Method and device for controlling a tool of a working machine

John D Duffy, William E. Allen, Robert E. Stone, 1997 .

Design Guidelines for Wire Mesh/Cable Net Slope Protection

Balasingam Muhunthan, John D Duffy, Steve M Lowell, 2005 .