The following presents a condensed list of the core staff members in the Mechanical Department alog with a brief description of their responsibilities.




C.Y. Thomas Li, P.Eng (ON,NS,SK)

Chairman, Board of Directors

B.Eng. (Concordia, 1980)
M.Eng. (McMaster University, 1984)
Designated Consulting Engineer (ON)
G.L.Tiley & Associates Ltd. staff since 1991


  • • Noise and vibration investigation & analysis
  • • Hoist design, modification, & commissioning
  • • Vibration testing & finite element analysis
  • • Gas and steam turbine component design
  • • Research in machine tool dynamics

Peter Tiley, P.Eng.

Honourary Director

B.Eng. (McMaster University, 1970)
M.Sc. (Bristol, 1972)

G.L.Tiley & Associates Ltd. staff since 1977


  • • Research engineer (Vibration & Thermo-Hydraulics)
  • • Hoist design, modification, & commissioning
  • • Hoisting system analysis and certification

Sherif Hassan, P.Eng.

Mechanical Engineering Supervisor

B.Sc. (Cairo, 1979)
M.A.Sc. (University of Waterloo, 1998)

G.L.Tiley & Associates Ltd. staff since 1996


  • • Research in Vibration Analysis
  • • Hydraulic, pneumatic, and braking systems
  • • Hoist design, modicfication, and commissioning
  • • Vibration testing and analysis

Robert Busic, P.Eng.

Mechanical Engineer

B.Sc. (University of Zagreb, 1997)
G.L.Tiley & Associates Ltd. staff since 2010


  • • 3D Design of Hoist Components
  • • Stress Analysis & FEA Modelling
  • • Hoist Evaluation & Application Engineering


Greg Stevens, P.Eng.

Senior Mechanical Engineer

B.Sc., B.A.Sc. (University of Ottawa, 2008)
G.L.Tiley & Associates Ltd. staff since 2008


  • • Guide Alignment Accelerometer Testing
  • • Brake, Engine & Controls design
  • • Drum Stress Analysis
  • • Hoist Service Procedure

Jason Boilard, P.Eng.

Senior Mechanical Engineer

B.Eng. (McMaster University, 2006)
G.L.Tiley & Associates Ltd. staff since 2007


  • • Design & commissioning of mine hoist systems
  • • Field service engineering for hoist systems
  • • Hoist braking systems
  • • Finite element analysis

Dr. Quan Situ, PH.D., P.Eng.

Mechanical Analyst


B.Eng. (University of Science and Technology, 1994)
M.Sc. (McMaster University, 2003)
Ph.D. (McMaster University, 2008)
G.L.Tiley & Associates Ltd. staff since 2008


  • • Hoisting machine assembly and part design
  • • Mechanical calculation of load and life
  • • FE stress calculation, structural & model analyis
  • • Non-linear analysis of failure prediction
  • • Computer applicatons of modelling software
  • • Mechanical system troubleshooting

Bruno Visentin, C.E.T.

Senior Mechanical Designer


Dipl.T (Niagara College, 1970)


G.L.Tiley & Associates Ltd. staff since 1984


  • • Design and layout of hoist systems
  • • Hoist building layout and designs
  • • Planning and costing of mine facilities
  • • Industrial specialist in heating and mine ventilation
  • • HVAC and fire protection system design


Joe Gucciardi

Hoist Mechanical Specialist & Supervisor of Mechanical Drafting and Design

Dipl.T (Mohawk College, 1999)


G.L.Tiley & Associates Ltd. staff since 2009


  • • Machine design
  • • Mechanical installations
  • • Failure analysis and preventative maintenance
  • • Vibration analysis
  • • Guide alignment accelerometer testing
  • • Supervision of hoist refurbishment



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