| SHA | Silica Hazard Awareness | Awareness |
| OHTA201 | Basic Principles in Occupational Hygiene | Foundation |
| OHTA501 | Measurement of Hazardous Substances | Intermediate |
| OHTA502 | Thermal Environment | Intermediate |
| OHTA503 | Noise - Measurement and its Effects | Intermediate |
| OHTA504 | Asbestos and Other Fibres | Intermediate |
| OHTA505 | Control of Hazardous Substances | Intermediate |
| OHTA506 | Ergonomic Essentials | Intermediate |
| OHTA507 | Health Effects of Hazardous Substances | Intermediate |
| OHTA1001 | OH/IH in Mining and Mineral Processing Industries | Specialist |
