New Diesel Particulate Matter (DPM) Exposure Legislation

New Diesel Particulate Matter (DPM) Exposure Legislation

HJS SA Offers Mining-Ready Compliance Solutions

In a significant step forward for occupational health and safety in South African mining, the Minister of Mineral and Petroleum Resources has introduced new amendments to the Mine Health and Safety Act (MHSA), setting legally enforceable limits on airborne pollutants, including Diesel Particulate Matter (DPM). These changes, published in the Government Gazette, come into effect on 26 June 2025, and mark the first time DPM – specifically elemental carbon, classified as a carcinogen – has been included in the MHSA’s exposure limit tables. The new occupational exposure limit is 0.1 mg/m³, demanding urgent attention from mine operations across the country. Click to see the full legislation paper here. 

A Challenge to Compliance—And an Opportunity for Change

For many mining operations, particularly those running diesel-powered fleets underground, meeting this new standard will require significant changes in both emission control technology and operational protocols. That’s where HJS Emission Technology SA comes in.

HJS SA: Proven DPF Solutions, Tailored for the Mining Industry

As the OEM (Original Equipment Manufacturer) of Aftertreatment Systems such as Diesel Particulate Filters (DPFs), Catalytic Converters, and Exhaust Systems, HJS SA has been at the forefront of emission control innovation in South Africa for the last decade through its distributor network, conducting field trials and installations of its DPF systems at leading mining houses with proven, measurable success.

HJS fitted technology is not only compliant with the upcoming Diesel Particulate Matter (DPM) exposure legislation, but has also shown significant secondary benefits, including:

• Improved machine operational efficiency
• Fewer breakdowns due to planned maintenance
• Noticeable reductions in fuel consumption

More Than Technology: Community-Centered Service Delivery

HJS SA isn’t just about cutting-edge exhaust systems. The company is deeply committed to supporting the mining communities in which it operates. Through a unique value-driven model, HJS SA provides:

• On-site technical support through trained local staff
• Upskilling and employment of community members, empowering local economies
• Seamless integration of emission control systems into existing mining fleets

This holistic approach ensures not only regulatory compliance to the Diesel Particulate Matter (DPM) exposure legislation, but long-term operational sustainability for mining clients.

The Path Forward for South African Mines

With the new OEL limit, HJS, through its experience, can assist mines across the country with compliance of regulatory frameworks through assisting with risk assessments, best practices and implementing engineering controls that meet the stringent new standards. HJS SA stands ready to assist with:

• Customised DPF solutions engineered for mining
• Professional guidance on regulatory compliance
• Turnkey implementation and ongoing support

Compliance. Performance. Community.

With tested and trusted systems already delivering results on South African mines, HJS SA offers a clear path to compliance and improved operational outcomes. By addressing the risks of Diesel Particulate Matter at the source, mines can meet legislative demands while also improving safety, sustainability, and community impact.

Contact HJS Emission Technology SA today at sales@hjs-sa.com or +27100067513 to ensure your fleet is ready to meet the standards – and beyond.