▼ General  Construction  Safety(1984)

 ▼ Mechanical Inspection(1984)

 ▼  Electrical Inspection(1984)

 ▼ Industrial Hygiene(1987)

 ▼ Architectural Hardware (1986)

 ▼ Value Engineering (1987)

 ▼ Fire Alarm System, Transmission(1987)

 ▼ Construction Safety Inspection (1987)

 ▼ Construction Safety Trainer Training Course(1990)

 ▼ Excavation Course(1996)