Crystalline Silica
Substances (CSS)
CSS refers to anything containing >1% crystalline silica. Under the Work Health and Safety (WHS) Amendment (CSS) Regulation 2024, workers are required to follow strict procedures to protect themselves from respirable crystalline silica (RCS).
Managing Exposure and Ensuring Worker Safety
Crystalline silica dust is hazardous and can be found in many materials, such as stone, soil and sand. They can be found in other everyday materials, such as glass manufacturing raw materials, bricks, tiles or concrete. Exposure to CSS in the form of RCS can lead to irreversible lung diseases known as silicosis.
It’s important to recognise and treat materials that have more than 1% of crystalline silica as a CSS. Failure to do so may lead to immediate work stoppage and cause significant project delays.
Reach out to our Occupational Hygiene Team
Kate Cole OAM Presents at University of
Sydney Research Conferences
Degree Research Conference and the Emerging Health Policy &
Economics Research Conference, sharing her work on silica dust exposure
in Australian tunnelling, industry survey insights, and data access through
Freedom of Information.
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James Thompson
Senior Associate Occupational Hygienist, Laboratory Manager
BSc (Biotechnology), Post Grad Dip (Env Studies) and Master of Occupational Hygiene (UOW – in progress)
SafeWork NSW Licensed Asbestos Assessor
James’ responsibilities include team management, laboratory management, project management, a range of occupational hygiene services, fieldwork and preparation of:
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- Asbestos Clearance Certificates
- Asbestos Management Plans
- Asbestos in Soils Investigations
- Review of Asbestos Removal Control Plans
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James has held NATA accredited signatory status during both of his previous tenures.
James specialises in the following disciplines:
- Occupational Hygiene Services
- Hazardous Materials
- Laboratory Management and NATA Accreditation
Sean Kelly
Senior Occupational Hygiene Consultant
Bachelor of Planning (Macquarie University) & SafeWork NSW Licensed Asbestos Assessor
Sean’s responsibilities include but are not limited to project management, team leader and mentoring roles, as well as fieldwork services that are inclusive of;
- Personal Exposure Assessments
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